The Federal Highway Administration, Central Federal Lands Highway Division (FHWA-CFLHD), in cooperation with Forest Service–Stanislaus National Forest (STF) and Tuolumne County, plans to improve a portion of County Road 460507, formerly known as Forest Highway 191, and also known as Buchanan Road. The improvements include (1) rehabilitation of 0.6 mile of Buchanan Road beginning in Tuolumne at Carter Street; (2) reconstruction of 1.9 miles of Buchanan Road from Tuolumne to the Buchanan Mine Road (BMR) Bridge; and (3) removal and replacement of the BMR Bridge to the south of the existing bridge across the North Fork Tuolumne River.
The purpose of the proposed action is to improve the operation and safety of the roadway and reduce maintenance costs.
The need to improve travel characteristics and operational safety on Buchanan Road is driven by the presence of the following roadway conditions and design deficiencies that affect its operational condition:
- Insufficient roadway widths
- Structurally deficient pavement conditions
- Sub-grade settlement and fill slope movement
- Poor surface drainage and non-functioning ditches
- Substandard sight distances and road side hazards
- Substandard road geometrics (steep grades and sharp curves)
- Cut-slope instability in steep cut areas
- Lack of guardrail in the steep descending portions of the canyon
- Lack of clear zone in portions of the canyon
- Functionally obsolete BMR Bridge
Key Project Dates
Advertise: Summer 2017
Construction: Fall 2017 – Fall 2018
Typical roadway condition.
Buchanan Mine Road Bridge.
- California Forest Highways 191 and 190: Finding of No Significant Impact (Acrobat, 11.38 MB)
- Buchanan Road Improvement Project NEPA Re-Evaluation Memo (Acrobat, 451 KB)
|Project #||CA FLAP 460507(1)|
|Project Name||Buchanan Road|
|FLMA||Stanislaus National Forest|
Project Manager: Wendy Longley
Federal Highway Administration
Central Federal Lands Highway Division
12300 West Dakota Avenue
Lakewood, CO 80228