Bridge Detail Sheets

The New Hampshire Department of Transportation (NHDOT) makes these documents available on an "as is" basis. These documents are prepared by the NHDOT for use on NHDOT projects. Others who use the NHDOT documents do so at their own risk.

Bridge Detail Sheets are backed by engineering analysis, calculations, crash testing, and are approved by NHDOT Administrators and the Federal Highway Administration (FHWA). Only certain details can be modified by designers. As noted on each bridge sheet, if any modifications are made to details other than those noted, the engineer responsible for the modifications becomes the Engineer of Record (EOR) for those details and all effects the modifications have on other components within the sheet.

Additional Bridge Info

All the .dgn files have been converted from MicroStation V8i to the newer version, MicroStation Connect.  The MicroStation Connect files listed below are designated with "MSC". 

Steel Bridge and Approach Rail

  • Revision History
  • Format: pdf
  • Revised: 9/11/2024
  • T2 Steel Bridge Rail
  • Format: pdf | dgn (MSC)
  • Revised: 7/31/2023
  • T2 Steel Bridge Approach Rail
  • Format: pdf|  dgn (MSC)
  • Revised: 9/27/2023
  • T3 Steel Bridge Rail
  • Format: pdf | dgn (MSC)
  • Revised: 7/31/2023 
  • T3 Steel Bridge Approach Rail
  • Format: pdf | dgn (MSC)
  • Revised: 9/27/2023
  • T4 Steel Bridge Rail
  • Format: pdf | dgn (MSC)
  • Revised: 7/31/2023
  • T4 Steel Bridge Approach Rail
  • Format: pdf | dgn (MSC)
  • Revised: 9/27/2023
  • Snow Screen with Steel Bridge Rail
  • Format: pdf | dgn (MSC)
  • Revised: 9/11/2024
  • Protective Screen with Steel Bridge Rail
  • Format: pdf | dgn (MSC)
  • Revised: 9/11/2024

T101 Bridge Rail

  • Revision History
  • Format: pdf
  • Revised: 7/31/2023
  • T101 Bridge & Approach Rail (Brown or Galvanized, 7" Curb Reveal)
  • Format: pdf | dgn (MSC)
  • Revised: 7/31/2023

Bridge Mounted Sign Supports

  • Revision History
  • Format: pdf
  • Revised: 12/12/2023
  • Bridge Mounted Sign Supports
  • Format: pdf | dgn (MSC)
  • Revised: 12/12/2023

Deck Panels

  • Revision History
  • Format: pdf
  • Revised: 7/31/2023
  • Precast Concrete Deck Panel - Steel Girder
  • Format: pdf | dgn (MSC)
  • Revised: 7/31/2023
  • Precast Concrete Deck Panel - Concrete Girder
  • Format: pdf | dgn (MSC)
  • Revised: 7/31/2023

Soundwalls

  • Revision History
  • Format: pdf
  • Revised: 7/31/2023
  • Precast Concrete Soundwall (Sheets 1-4)
  • Format: pdf
  • Revised: 7/31/2023
  • Precast Concrete Soundwall (1 of 4)
  • Format: dgn (MSC)
  • Revised: 12/21/2022
  • Precast Concrete Soundwall (2 of 4)
  • Format: dgn (MSC)
  • Revised: 1/17/2023
  • Precast Concrete Soundwall (3 of 4)
  • Format: dgn (MSC)
  • Revised: 7/31/2023
  • Precast Concrete Soundwall (4 of 4)
  • Format: dgn (MSC)
  • Revised: 12/21/2022
  • Retrofit Precast Concrete Panel, Soundwall (1 of 1)
  • Format: pdf | dgn (MSC)
  • Revised: 12/21/2022

Temporary Portable Concrete Barrier

  • Revision History
  • Format: pdf
  • Revised: 7/31/2023
  • Texas Restrained Barrier (X-Bolt) (Transition piece connects to Highway PCB Standard Plan GR-23)
  • Format: pdf
  • Revised: 6/1/2020
  • Portable Concrete Barrier - Braced (Transition piece connects to Highway PCB Standard Plan GR-23)
  • Format: pdf
  • Revised: 6/1/2020
  • Texas Restrained Barrier (X-Bolt) (Transition piece connects to Highway PCB Standard Plan GR-24 & GR-25)
  • Format: pdf | dgn (MSC)
  • Revised: 6/1/2020
  • Portable Concrete Barrier - Braced (Transition piece connects to Highway PCB Standard Plans GR-24 & GR-25)
  • Format: pdf | dgn (MSC)
  • Revised: 6/1/2020

Vehicular Collision Pier Protection

  • Revision History
  • Format: pdf
  • Revised: 12/26/2023
  • 54" Single Slope Concrete Barrier, Precast
  • Format: pdf | dgn (MSC)
  • Revised: 8/4/2015
  • 54" Single Slope Concrete Barrier Single-Faced, Precast
  • Format: pdf | dgn (MSC)
  • Revised: 8/4/2015
  • 54" to 45" Transition Single Slope Concrete Barrier, Precast
  • Format: pdf | dgn (MSC)
  • Revised: 7/31/2023
  • 54" to Beam Guardrail Transition Single Slope Concrete Barrier, Precast
  • Format: pdf | dgn (MSC)
  • Revised: 2/2014
  • Pier Protection Type I (54" Single Slope Concrete Barrier)
  • Format: pdf | dgn (MSC)
  • Revised: 12/26/2023
  • Pier Protection Type II (54" Single Slope Concrete Barrier)
  • Format: pdf | dgn (MSC)
  • Revised: 12/26/2023
  • Pier Protection Type II (54" Single Slope Concrete Barrier, Single Faced)
  • Format: pdf | dgn (MSC)
  • Revised: 12/26/2023