Drivers yield to any vehicles or bicyclists already in the roundabout. Commercial/Industrial Road - 60' Right of Way. Please turn on JavaScript and try again. NCDOT follows National Bridge Inspection Standards and ensures each bridge is inspected at least every two years. of Transportation |. A functionally obsolete bridge no longer meet the demands of the traffic using it. 919-715-7000. Tim Rudnick, Standards and Manuals Supervisor. Instead of makinga traditional left turn, go three-quarters around before exiting to the right. For DMV questions, call us at SEE STANDARD DRAWING D-714-22 FOR DETAILS Class AE-3 Concrete Existing Pipe SIDE VIEW J 7'-3" 8'-6" reinforced as per AASHTO M170 Standard Reinforcement for Class III pipe 12" minimum for culverts 66" dia. 610d01 Guide for Paving Shoulders Under Bridges Method I. When expanded it provides a list of search options that will switch the search inputs to match the current selection. It looks like your browser does not have JavaScript enabled. City of Charlotte Land Development Standards Manual (CLDSM) (Includes Charlotte ET J) Below are the City of Charlotte (and ETJ) Land Development Standard Drawings in PDF format. 2018 Standard Specifications Manual with ASTM. Mebane, NC 27302. 2016 Legacy Version - Guidance in the methods, procedures, policies, and criteria for Drainage Studies and Hydraulic Design. If a required detail is not included on this web page, the North Carolina Department of Transportation (NCDOT) Roadway Standard Drawings shall apply. For DMV questions, call us at MC-213.03. of Transportation |. Do not ride along the shoulder of the roundabout. Traffic Signing. Table 1005-1 Aggregate Gradation - Coarse Aggregate; Table 1005-2 Aggregate Gradation - Fine . culverts A T T U S 1 Dia. To ensure the safety of motorists who rely on these bridges, NCDOT has an aggressive inspection program. Remember to give larger trucks and buses extra room, as they might need to straddle the lane. Orders can be submitted by phone at (803) 737-4533 or by email to PlanStorage@scdot.org. Phone: (775) 888-7607. Technical Services. Spring Field Review Details; Culvert Standards; SMU Manuals; Project Special Provisions; Resource Documents; Standard Drawings Currently selected; AGC and ACEC Minutes; As of March 2021, about 1,100, or 8.2 percent, of the state's bridges were considered in poor condition. 02/21/2023 1:16 pm, Complete Sets and Individual Drawings Available in Adobe Acrobat, AutoCAD and MicroStation Formats. A driver generally enters the roundabout more quickly than if waiting at a traffic signal. 1501 Mail Service Center Division 02 - Earthwork. Standard Specifications, Special Provisions, Pay Items, and Other Resources, Roadway Standard Drawings, Details, and Other Resources, Roadway Standard Drawings English and Metric, Details Revisions to Drawings, Inductive Loop Details, Project Notes, Calculation of Quantities Sheets, Checklist for Plans, Trnsport Pay Item List, Additional Resources, FHWA-NCDOT Stewardship and Oversight Agreement, AGC-DOT Joint Cooperative Committee & Roadway Subcommittee, Resource for Development of Contract Bid Proposals, 2018 Standard Specifications Book for Roads and Structures, 2012 Standard Specifications Manual with ASTM, Roadway Standard Drawings and Specification Books for 2006, 2006 Specifications and Standard Drawings, 2012 and 2018 Standard Specifications and Provisions, Roadway Standard Drawings 2002 (Archived), Division Operations and Maintenance Provisions, 2018 Specifications and Special Provisions, Division Managed Project Delivery Training, North Carolina Dept. Arterial Road - Open Section with Sidewalk, Bikepath and Street Trees. Standard Drawings currently in effect at the beginning of construction for the item may also be used if agreed upon between the Resident Engineer and the Contractor. (919) 563-3401. 2009 Standards. 2MB 2.2.10 CONCRETE ADMIXTURES Concrete admixtures, when specified by the Public Services Director, shall conform to Section 1024-3, Admixtures of NCDOT Standard Specifications for Roads and Structures. Mail Service CompleteGreenway Standard Detail Drawings: IndividualGreenway Standard Detail Drawings, Contact:Capital Projects Senior Supervisor919-996-4785, Individual Reuse Standard Detail Drawings. In addition, the modern roundabout is much smaller than older traffic circles and requires vehicles to travel at lower speeds (15-20 mph), making them safer than traffic circles. Roadside Environmental Standard Provisions, Central Line Up Sheet for General Construction, Division Line Up Sheet for General Construction. Email: RBennett@dot.nv.gov. Contact Info. Footer. 1MB Connect NCDOT > Resources > Contract Standards > 2018 Specifications and Special Provisions; 2018 Standard Provisions. They are intended to be used as a guide in the preparation and submittal of plans for private development and city contract projects within the City of Raleigh and the city's extra-territorial jurisdiction. your browser does not have JavaScript enabled. Use the to download the files. ), Strip Seal Expansion Joint Details For Barrier Rail, Intermediate Steel Diaphgrams for 63" (1600mm) & 72" (1829mm) Prestressed Concrete Modified Bulb Tees, Division Managed Project Delivery Training, Drawing Submittal Status and Design Notes, North Carolina Dept. To learn how to use DriveNC.gov, please watch this video. the booth short film mubi; cost to install second electric meter uk; ncdot standard details Resources for analysis and management of roadways and intersections. masonry as shown on the standard details, and the lower end shall have a one (1) inch PVC condensation drain. ATTENTION MBE'S & WBE'S. Barnhill Contracting Company is requesting bids from any interested firms for the following project: NCDOT Contract: #DA00542 Chowan County - Milling, Resurfacing & Shoulder Reconstruction, US 17 Bypass and US 17 Business in Chowan County. For further assistance, call us at 401. Everyone using the roundabout moves in a counterclockwise direction, and those already in it do not yield to approaching vehicles. to Section 102 and 103 of the Standard Specifications and shall be sent to: N.C. Department Of Transportation Contract Standards and Development Unit NOTIFICATION OF AWARD Federal Aid No. of Transportation |. Please note that DWG files are for AutoCAD users ONLY. April 1, 2008, PDF Pre-Bid Meeting is on Wednesday, March 1 st, 2023 at 10:00 AM. Qualified inspection teams assess the condition of all elements on a bridge during an inspection, including: A team of divers trained in underwater bridge inspection examine parts of the bridge that are underwater. The Contractors are contractually required to follow only the printed bound booklet, "Standard Construction Details Roadway-Traffic Control-Bridge, 2016" (pdf 42m), as of the date of the contract, and the revised details included as part of the Contract documents. For NCDOT to replace all poor condition bridges, it would cost more than $4billion. Tip No. Transverse Mainline Pipe Installation Detail - Pipes 4 Feet or Less Below Top of Subgrade. If a bridge is found to have safety issues or structural concerns, NCDOT immediately takes action. Landscape Construction Standards 2017 - (rev 11) - City Engineering / Landscape Management Division's standards book for Landscape Construction. standard sheet title (deleted or superseded sheets) original issuance: original effective date: superceded date: 646-01. delineator, reference marker and snow plowing marker fabrication details: eb 08-036. eb 08-036. Never enter a roundabout while an emergency vehicle using flashing lights and sirens is passing through. Over the past decade, the number of pedestrian fatalities has increased sharply. When finished, the graded subgrade should not deviate from the required grade and cross section by more than 1/2 inch in 10 feet. NCDOT is committed to measuring and improving its overall performance. Carolina Department of Transportation (NCDOT Standard Specifications, NCDOT manuals and procedures, and Town of Huntersville Standard Specifications. Big trucks should use the concrete island called the truck apron to help drivers maneuver around the roundabout. Please turn on JavaScript and try again. 2012 Roadway Standard Drawings - Index of Sheets, Division 05 - Subgrade, Bases and Shoulders, Division 06 - Asphalt Bases and Pavements, Division 07 - Concrete Pavements and Shoulders, Division 12 - Pavement Markings, Markers and Delineation, Division 16 - Erosion Control and Roadside Development, Division 17 - Signals and Traffic Management Systems, Curb Ramp Details - Directional Ramps Type 1B thru 1D, 1993 Detail in Lieu of Standards 84805 sheet 2, 1993 Detail in Lieu of Standards 84805 sheet 1, 1989 revision to 1977 Standard Drawings 84805 sheet 2, 1989 revision to 1977 Standard Drawings 84805 sheet 1. Raleigh, NC 27699-1501. Please turn on JavaScript and try again. New Hampshire Department of Transportation. Once inside the roundabout, you simply exit at the desired street. to Section 102 and 103 of the Standard Specifications and shall be sent to: N.C. Department Of Transportation Contract Standards and Development Unit NOTIFICATION OF AWARD Federal Aid No. To fully address the issues on a poor conditionbridge, extensive rehabilitation or replacement is usually required. within NCDOT rights-of-way shall be installed perpendicular (90 degrees) to the paved street in the right-of-way. NCDOT Standard Specifications for Roads and Structures. 2012 and 2018 Standard Specifications and Provisions; Roadway Standard Drawings 2002 (Archived) AGC-DOT Joint Cooperative Committee & Roadway Subcommittee; . 01/08/09-646-02. MC-213.04. Our mailing address is 1501 Mail Service Center, Raleigh NC 27699-1501. Transverse Mainline Pipe Installation Detail - Multiple Pipes More Than 4 Feet Below Top of Subgrade. These safety improvements were achieved after roundabouts replaced 13intersectionswith 55 mph speed limits: Similar results were found after 30 roundabouts were constructed across North Carolina: Pedestrians should use marked crosswalks along the outside of the roundabout, and not walk through the middle of it. The City will continue to utilize the construction details listed below, as they are unique to City . 20.00B. Recent. Wingwalls. 2020 Standard Specifications Book. It looks like your browser does not have JavaScript enabled. Capital Projects Superintendent919-996-4115. It looks JavaScript Required JavaScript must be enabled to use some features of this site. 1-877-DOT-4YOU ( TraffIc Safety. BARNHILL CONTRACTING COMPANY. County Location 1020 Birch Ridge Drive RALEIGH, NC 27610 STATE FUNDED R-5751 ROBESON US-74 AT NC-72 AND NC-130. This manual contains tools and information for developing plans to minimize soil erosion and prevent sedimentation associated with land-disturbing activities. The compaction require-ment may substitute a specified number of diskings and roller coverages of each lift. Please turn on JavaScript and try again. Standard 4'-6" Brick Masonry Curb Inlet. functionally obsolete. February 7, 2023, PDF Following standard procedures and specifications for documentation and inspection of construction activities; Reading, interpreting, and ensuring compliance with construction plans, specifications, and contracts; Daily calculating, reporting, documenting, and communicating verbally and in writing; 01/08/09-646-11. Locate contact information for NCDOT employees, local offices, and more. 1-877-368-4968). 5/27/2020. SCDOT Standard Drawings are for use on projects within SCDOT Rights-Of-Way only. February 7, 2023, PDF Traffic Lighting. It looks like your browser does not have JavaScript enabled. Poor condition bridges are safe, however, they have components that are deteriorating. TraffIc Notes. Division 07 - Concrete Pavements and Shoulders. 610d01 Guide for Paving Shoulders Under Bridges Method I. The N.C. Department of Transportation recommends an all-way stop only after a thorough evaluation of . 5/27/2020. 7MB Assistant Director of Engineering Services919-996-3940. This certificate must include the NC Department of Transportation as an additional insured on the policy. To achieve this goal, the department uses a data-driven strategy to improve the overall condition of all bridges in North Carolina by focusing taxpayer dollars where they're needed most. Portions of the project are funded through a federal grant (STIP # BL-0010) administered by NCDOT. County Location 1020 Birch Ridge Drive RALEIGH, NC 27610 STATE FUNDED SWAIN US-74 FROM SR-1190 (HYATT CREEK RD) TO US-19 (ALARKA RD) INCLUDING RAMPS. Public Utilities Director. Please turn on JavaScript and try again. Voluntary Engineering Standards Jun 12 2021 North Carolina Publications Jan 08 2021 Great River Bridge, US 65 in AR to MS-8 in MS [AR,MS] Nov 25 2019 US-19, Andrews Bypass to US-19-NC-28 Intersection, Cherokee/Graham/Swain Counties Jun 24 2022 As you approach it, youll see a yellow roundabout ahead sign, indicating you should slow down. As of January2023, about 1,150, or 8.4percent, of the state's bridges were considered in poor condition. Contact N.C. Department of Transportation 1501 Mail Service Center Raleigh, NC 27699-1501 Send Message Commercial-Business District Road. It looks like your browser does not have JavaScript enabled. LIST OF STANDARD DRAWINGS K 840.25 Anchorage for Frames - Brick or Concrete or Precast 840.24 Frames and Narrow Slot Sag Grates 840.18 Concrete Grated Drop Inlet Type 'B' - 12" thru 36" Pipe 840.17 Concrete Grated Drop Inlet Type 'A' - 12" thru 72" Pipe 840.16 Drop Inlet Frame and Grates - for use with Std. 610d04 Guide for Paving Shoulders Under Bridges Method IV. To purchase a hardcopy of the 2010 edition of the NHDOT's Standard Plans for Road Construction please contact our Records Section. Job Details. Transportation Mobility & Safety. to reference marker . Kudos to Joseph Block, Riley Beaman and NCDOT for coordinating an excellent program today to discuss how FAA BEYOND partners in North Carolina can work Prime Coat An application of a low-viscosity liquid It looks like your browser does not have JavaScript enabled. Bicyclists should pick the appropriate lane before entering a multi-lane roundabout and stay in the middle of their chosen lane. 610d03 Guide for Paving Shoulders Under Bridges Method III. This work requires the regular exertion of up to 10 pounds of force and frequent exertion of up to 50 pounds of force; work regularly requires walking, speaking or hearing, using hands to finger, handle or feel, tasting or smelling, pushing or pulling and lifting, frequently requires standing, sitting, reaching with hands and arms and repetitive motions and occasionally . Arterial Road - 5 Lanes Including Center Left Turn Lane. Address: 353 E Six Forks Road Suite 270 Raleigh, NC 27609. Stormwater Management Program. Connect NCDOT > Resources > Contract Standards; 2018 Specifications and Special Provisions. PDF NCDOT MSE Wall Aggregate Sampling and Testing Procedures Manual . Tip No. 1-877-368-4968). 2014 Supplemental Specifications. Division Operations and Maintenance Provisions. Any questions regarding the NCDOT Standard Drawings should be directed to the NCDOT, Design Services Unit at 919-250-4128 . Disclaimer: The data provided in this list is current as of January2023, and is subject to change based on re-inspection or changes due to maintenance and/or construction. Division 03 - Pipe Culverts. BID REQUEST . Thalle's corporate headquarters is in Hillsborough, NC. The N.C. Department of Transportation builds roundabouts to improve safety for drivers, pedestrians and bicyclists. 1-877-368-4968). Standard 5' Diameter Brick Masonry Storm Sewer Manhole. 2014 Standard Specifications Book. For example, an interstate route would have a higher weight expectation than a rural secondary road. Source: NCDOT's Mobility and Sa fety Division (2011) . 5/27/2020. Traffic Control. 2018 Standard Specifications Book for Roads and Structures Effective with January 1, 2018 Let. 919-715-7000. Complete Bicycle Facility Standard Detail Drawings: Individual Bicycle Facility Standard Detail Drawings: Contact: Specifications Manuals. Effective July 1, 2018, the City will adopt the North Carolina Department of Transportation (NCDOT) standards as its official Construction Standards. City of Mebane Standards and Specifiations. Individual Sewer Standard Detail Drawings: Complete Stormwater Standard Detail Drawings: Individual Stormwater Standard Detail Drawings: CompleteTransit Standard Detail Drawings: IndividualTransit Standard Detail Drawings: Contact: Aug 2014. South Carolina Department of Transportation. 402. NCDOT Standards Approved For Use in the City of Charlotte and Charlotte ETJ: 11: 2000B: 20.00B: NCDOT Standards Approved For Use in the City of Charlotte and Charlotte ETJ: 5: 2000C: 20.00C: NCDOT Standards Approved For Use in the City of Charlotte and Charlotte ETJ: 20: 2003: 20.03: Double Brick Catch Basin: 20: 2005A: 20.05A: Slab Type Catch . Poor condition bridges are safe, however, they have componentsthat are deteriorating. Our mailing address is d) Casings and carrier pipes shall not obstruct culverts, bridges, the flow line of . Division 04 - Major Structures. Design standards are in Adobe (pdf) format only. 2007 Standard Specifications 2000 Standard Specifications. & larger 8" minimum for 12" to 60" dia. Guidance in the methods, procedures, policies, and criteria for Drainage Studies and Hydraulic Design. Standard Drawings [for Highway Construction] Feb 18 2022 An Index of U.S. 20.00B. CONTRACTS STANDARDS AND DEVELOPMENT Customer Service: 1-877-368-4968 RALEIGH, NC 27610 In addition, I wish to call your attention to Articles 107-15, 108-1, 108-2, and 108-3 of our Standard Specifications relative to liability insurance, prosecution of work, progress schedule, and preconstruction conferences. 2012 Standard Specifications Manual with ASTM links (PDF), 2018 Standard Specifications Book for Roads and Structures Effective with January 1, 2018 Let, 2018 Standard Specifications Manual with ASTM, 610d03 Guide for Paving Shoulders Under Bridges Method III, 610d04 Guide for Paving Shoulders Under Bridges Method IV, 610d01 Guide for Paving Shoulders Under Bridges Method I, 610d02 Guide for Paving Shoulders Under Bridges Method II, 865D01 Cable Guiderail Impact Attenuator Sheet 1, 2006 Specifications and Standard Drawings, 2012 and 2018 Standard Specifications and Provisions, Roadway Standard Drawings 2002 (Archived), AGC-DOT Joint Cooperative Committee & Roadway Subcommittee, Division Operations and Maintenance Provisions, 2018 Specifications and Special Provisions, Division Managed Project Delivery Training, North Carolina Dept. January 5, 2012, Federal Coding Guide, Inventory & Appraisal of Bridges, List of North Carolina Bridges (January 2023), NCDOT Guidelines for Managing Bridge Wash Water, NCDOT Guidelines for Managing Hydrodemolition Water. When it comes to pedestrian safety, it's a two-way street for walkers and drivers that involves equal respect and responsibility. If any part of the "Detail Drawings" are required, please insert ALL drawings in the Roadway Plans. SCDOT Standard Drawings shall not be reproduced in project plans. Ryan Bennett, Specifications Supervisor. use some features of this site. C D B 6" 4" Tie Bolt or Groove Tongue R PERSPECTIVE END VIEW E 1200'0" 610d04 Guide for Paving Shoulders Under Bridges Method IV. D714-25M. Standard Specifications, Drawings & Provisions for Utilities Work, 2012 and 2018 Standard Specifications, Drawings, and Provisions, plus Additional Resources, Guidance for developing UbO Plans and Special Provisions, Guidance for developing UC Plans, Special Provisions, and Estimates, 2006 Specifications and Standard Drawings, 2012 and 2018 Standard Specifications and Provisions, Roadway Standard Drawings 2002 (Archived), AGC-DOT Joint Cooperative Committee & Roadway Subcommittee, 2018 Specifications and Special Provisions, Division Managed Project Delivery Training, North Carolina Dept. NCDOT Manuals and Handbooks - Important guides and handbooks from NCDOT . Division 08 - Incidentals. Because of ongoing work with the NCDOT, we have full-time career opportunities for the following positions in the Asheville area. NCDOT - Specialist- Expert (705277) - ONSITE - 7 March 2023 Mahantech Corp. Raleigh, NC 1 minute ago Be among the first 25 applicants Editorial Standards D714-26M. In cooperation with the Sedimentation Control Commission and pursuant to the Sedimentation Pollution Control Act of 1973, the Erosion and Sediment Control Program: Develops, adopts, and revises . Below are the Mecklenburg County Land Development Standard Drawings in PDF and DWG file formats. like your browser does not have JavaScript enabled. The standard detail drawings below apply to all Site Permit Review (formerly Concurrent Review). D714-26. NCDOT\'s HBCU/MSI Summer Internship Program delivers an immersive 8-week experience open to students attending an NC historically black college/university (HBCU)/minority-serving college/university (MSI). Typically, you will be in the right lane to exit right out of the roundabout. Locate contact information for NCDOT employees, local offices, and more. Learning Standard Specifications for Roads and Structures; Learning how to use Division of Highways Master Pay Item Lists; Working with . PO Box 483 | 7 Hazen Drive | Concord, NH | 03302-0483. 25KB PE Sealed pdf files on the website (originals maintained by the Design Standards Office) are the . A driver generally enters the roundabout more . Dwg 840.14 and 840.15 It looks like 63" Prestressed Concrete Modified Bulb Tee Link Slab and Continuous for Live Load, 63" Prestressed Concrete Modified Bulb Tee Link Slab and Continuous For Live Load, 72" Prestressed Concrete Modified Bulb Tee Link Slab and Continuous For Live Load, AASHTO Type II Prestressed Concrete Girder, AASHTO Type II Prestressed Concrete Girder Link Slab and Continuous For Live Load, AASHTO Type III Prestressed Concrete Girder, AASHTO Type III Prestressed Concrete Girder Link Slab and Continuous For Live Load, AASHTO Type IV Prestressed Concrete Girder, AASHTO Type IV Prestressed Concrete Girder Link Slab and Continuous For Live Load, Bridge Approach Slab For Flexible Pavement, Bridge Approach Slab For Integral Abutment, Bridge Approach Slab For Prestressed Concrete Cored Slab/Box Beam, Bridge Approach Slab For Prestressed Concrete Cored Slab/Box Beam Unit (Sub-Regional Tier), Elastomeric Bearing Details - P/S Concrete Superstructures, Elastomeric Bearing Details - Steel Superstructures, Expansion Joint Seal Details For Barrier Rail, Expansion Joint Seal Details For Sidewalk, Guardrail Anchor Assembly for Culverts - Anchorage Details, Guardrail Anchorage Details for Metal Rails and Vertical Concrete Barrier Rail, Intermediate Steel Diaphragms for 63" (1600mm) & 72" (1829mm) Prestressed Concrete Modified Bulb Tees, Intermediate Steel Diaphragms for TYPE II, III & IV Prestressed Concrete Girders, LRFR Summary For Concrete Box Culverts (Interstate Traffic), LRFR Summary For Concrete Box Culverts (Non-Interstate Traffic), LRFR Summary For Prestressed Concrete Girders (Interstate Traffic), LRFR Summary For Prestressed Concrete Girders (Non-Interstate Traffic), LRFR Summary For Reinforced Concrete Box Culverts (Deep Fill), LRFR Summary For Reinforced Concrete Box Culverts (deep Fill), LRFR Summary For Steel Girders (Interstate Traffic), LRFR Summary For Steel Girders (Non-Interstate Traffic), Modular Expansion Joint Seal Details For Barrier Rail, Modular Expansion Joint Seal Details For Sidewalk, Prestressed Concrete Box Beam Unit - 3'-0" (914mm) x _ _, Prestressed Concrete Box Beam Unit - 3'-0" (914mm) x 2'-3" (686mm), Prestressed Concrete Box Beam Unit - 3'-0" (914mm) x 2'-9" (838mm), Prestressed Concrete Box Beam Unit - 3'-0" (914mm) x 3'-3" (991mm), Prestressed Concrete Girder Continuous For Live Load Details, Prestressed Concrete Pile - 12" (305mm) Square, Prestressed Concrete Pile - 16" (406mm) Square, Prestressed Concrete Pile - 20" (508mm) Square, Prestressed Concrete Pile - 24" (610mm) Square, Prestressed Cored Slab Unit - 3'-0" (914mm) X _ _, Prestressed Cored Slab Unit - 3'-0" (914mm) X 1'-6" (457mm), Prestressed Cored Slab Unit - 3'-0" (914mm) X 1'-9" (533mm), Prestressed Cored Slab Unit - 3'-0" (914mm) X 2'-0" (610mm), Rail Post Spacings and End of Rail Details for One or Two Bar Metal Rails, Strip Seal Expansion Joint Details for Barrier Rail, Strip Seal Expansion Joint Details for Sidewalk, AASHTO Type II Prestressed Concrete Girder Continuous For Live Load, AASHTO Type III Prestressed Concrete Girder Continuous For Live Load, AASHTO Type IV Prestressed Concrete Girder Continuous For Live Load, Bridge Approach Slab For Prestressed Concrete Cored Slab, Bridge Approach Slab For Prestressed Concrete Cored Slab Unit (Sub-Regional Tier), Prestressed Concrete Modified Bulb Tee Continuous For Live Load - 63" (1600mm), Prestressed Concrete Modified Bulb Tee Continuous For Live Load - 72" (1829mm), Standard Superstructure Bill of Material (P/S Concrete Super. Roadway Standard Drawings 2002 (Archived) AGC-DOT Joint Cooperative Committee & Roadway Subcommittee. NCDOT is responsible for inspecting and taking care of about 18,500 structures: 4,800 culverts and pipes that are 20 feet or longer, which means they fit the federal definition of a bridge.