Camp Grisdale Road, Washington State

From IHSDMDownload

User Information

Organization/Agency: FHWA - Western Federal Lands Highway Division (WFLHD)

Basic Project Information

Project Name/Description: Camp Grisdale Road/Reconstruction and upgrade of existing gravel road

Nature of the Project/Study: 3R paving with some safety upgrades to correct deficient geometrics

Project Location: Washington State, Grays Harbor County

Highway Length: 17.5 miles

Functional Classification: Collector

Design Speed: 40 mph

Posted Speed: 40 mph

Terrain Type: Rolling

Application of IHSDM

IHSDM Module(s) used:

• Crash Prediction

• Design Consistency

Purpose of using IHSDM on this project:

To evaluate the changes in driver expectancies and quantify the relative difference in crash hazards between the original and proposed alignments.

Stage(s) of the project development process in which IHSDM was applied (e.g., planning, preliminary design, final design, etc.):

Preliminary to Intermediate project development during environmental review

How IHSDM results were used to make design decisions:

Results verified design decisions to ensure that substandard geometrics were improved in a manner that encouraged “safer” conditions for drivers (i.e., consistency and expectation).