New Hampshire Code of Administrative Rules
Tra - Commissioner, Department of Transportation
Chapter Tra 500 - CONSTRUCTION AID AND RELOCATION SERVICES
Part Tra 501 - STATE BRIDGE AID
Section Tra 501.04 - Bridge Project Design Criteria

Universal Citation: NH Admin Rules Tra 501.04

Current through Register No. 40, October 3, 2024

(a) Bridge projects constructed with state bridge aid shall be designed in accordance with the following design standards and manuals:

(1) AASHTO Load Resistance Factor Rating (LRFD) Bridge Design, 7th Edition (2014) with current interim revisions;

(2) AASHTO Manual for Bridge Evaluation, 2nd Edition (2010), with interim revisions;

(3) AASHTO Guide Specifications for Seismic Isolation Design, 4th Edition;

(4) AASHTO Standard Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals, 6th Edition (2013) and interim revisions;

(5) AASHTO Policy on Geometric Design of Highways and Streets (2011, 6th Edition);

(6) Federal Highway Administration Manual on Uniform Traffic Control Devices, as adopted by the commissioner as a policy for traffic control standards (2009 and subsequent revisions);

(7) AASHTO Roadside Design Guide, 4th Edition (2011);

(8) New Hampshire Department of Transportation (NHDOT) Standard Specifications for Road and Bridge Construction, 2010 Edition;

(9) New Hampshire Department of Transportation (NHDOT) Highway Design Manual (1999); and

(10) New Hampshire Department of Transportation (NHDOT) Bridge Design Manual (January 2015 - v 2.0).

(b) Bridge projects constructed with state bridge aid shall be designed in accordance with the AASHTO LRFD Bridge Design Specifications, 7th Edition (2014).

(c) Upon written application of a municipality, the department shall waive any of the minimum design standards:

(1) Unless it determines that granting the requested waiver would result in:
a. An imminent or substantial threat to human health, public safety, or the environment; or

b. The design or construction of a bridge structure that has a carrying capacity of less than:
1. 15 tons for a rehabilitated bridge; or

2. The legal load permitted by RSA 266:18-b for a new bridge; and

(2) If the municipality has accepted, in writing, responsibility for construction that does not meet the waived minimum design standards.

#8923, eff 6-27-07

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