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Irwin Creek Bridge

Map 

Facts 

Note: The following information comes from the National Bridge Inventory and has not been verified.
Overview
Concrete arch bridge over Irwin Creek on US 101 in San Rafael
Location
San Rafael, Marin County, California
Status
Open to traffic
History
Built 1895; rehabilitated 1987
Design
Closed-spandrel arch
Dimensions
Length of largest span: 15.1 ft.
Total length: 22.0 ft.
Deck width: 109.9 ft.
Approximate latitude, longitude
+37.97500, -122.52000   (decimal degrees)
37°58'30" N, 122°31'12" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/542157/4203149 (zone/easting/northing)
Quadrangle map:
San Rafael
Inventory numbers
CA 27-97 (California bridge number)
BH 11083 (Bridgehunter.com ID)
Inspection (as of 03/2015)
Appraisal: Structurally deficient
Sufficiency rating: 56.6 (out of 100)
Average daily traffic (as of 2009)
129,000

Comments 

Irwin Creek Bridge
Posted June 6, 2010, by Craig Philpott (cphilpott [at] puc [dot] edu)

IF any historical elements of this bridge exist they are deeply incorporated into the channeling of Irwin Creek under Hwy 101 and no historical elements are visible.