These Standard Specifications for the Construction of Roads and Bridges on Federal Highway Projects are issued primarily for constructing roads and bridges on Federal Highway projects under the direct administration of the Federal Highway Administration.

FLH Standard Drawings are intended to cover various design elements and be applicable nationwide. Each standard drawing is available in both Metric and US Customary units and conforms with the Standard Specifications (FP). Contact the

Standard Specifications — The Standard Specifications for Construction of Roads and Bridges on Federal Highway Projects approved for general application and repetitive use.

Preface The purpose of this document is to meet the need for National Park Service road design standards that will accommodate current or planned park road use, while continuing to preserve the natural and cultural values of National Park System areas; to address the requirements of Standard 12 of the Federal Highway Safety Program Standards (23 CFR 1230; 23 U.S.C. 402); and to provide design ...

FP-24 CFL Library of Supplemental Specifications These supplemental specifications are approved for use in the development of CFLHD projects using the FP-24. The FLH Supplement specifications are included within these supplements. To view/download specific supplemental specifications in MS Word format, select the appropriate link below.

The Standard Specifications for the Construction of Roads and Bridges on Federal Highway Projects (FP-24) was issued in 2024 replacing the FP-14. This is the current edition of the FP.

E – Determine material requirements, specifications, and costs. Discuss with the Materials Engineer any information needed for material requirements. Determine the aggregate gradation if necessary, or the class of concrete. For geotechnical materials, geotextiles or subexcavation depths, contact the project’s Geotechnical Engineer.

Standard Specifications (FP) FP-24 The Standard Specifications for the Construction of Roads and Bridges on Federal Highway Projects (FP) is issued primarily for constructing roads and bridges on Federal Highway projects under the direct administration of the Federal Highway Administration.

Description Ice roads are a common type of transportation corridor in regions of the circumpolar north. They traverse frozen rivers, lakes, and other bodies of water. Every winter, the varied combination of weather, hydrology, and other factors can form ice roads.

State Specifications The State link points to a specification page on the State's web site. The specification Name link is a direct link to the specification file (PDF), when available. All links are subject to change. Links were last checked July 2025. Send corrections and additions .