U.s. Highway 101 over Irwin Creek

Good Condition131 years old129,000 vehicles/day

Location

StateCalifornia
CountyMarin
Location04-mrn-101-11.20-srf
CarriesU.s. Highway 101
CrossesIrwin Creek
Coordinates37.97689, -122.52026

Condition Ratings

Overall ConditionGood
Channel/Waterway7 (Good)
Culvert7 (Good)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length206.7 ft (63 m)
Max Span15.1 ft (4.6 m)
Deck Area1493.1 sq m
Main Spans1
Year Built1895 (reconstructed 1987)

Traffic

Avg Daily Traffic129,000 (2009)
Lanes On Bridge9

Inspection & Ownership

Last Inspection423
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number27 0097

Nearby Bridges

U.s. Highway 101 over Linden Lane 0.3 mi Good 3rd ST over Irwin Creek 0.4 mi Good 2nd ST over Irwin Creek 0.5 mi Good W San Francisco Bl over San Rafael Creek 0.5 mi Fair 101n Offramp 2 ST over San Rafael Creek 0.5 mi Good Grand AVE over San Rafael Creek 0.5 mi Fair U. S. Highway 101 over 2nd 3rd 4th 5th Mssn 0.6 mi Fair U.s. Highway 101 over 2nd 3rd 4th 5th Mssn 0.6 mi Fair Lincoln AVE over San Rafael Creek 0.6 mi Poor Andersen Drive over Mahon Creek 0.7 mi Fair