N.H. Admin. Code § Tra 501.04

Current through Register No. 50, December 12, 2024

Section Tra 501.04 - Bridge Project Design Criteria

(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, 4^th 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.

N.H. Admin. Code § Tra 501.04

#8923, eff 6-27-07

Amended by Volume XXXVI Number 10, Filed March 10, 2016, Proposed by #11037, Effective 2/22/2016, Expires 2/22/2026.