US Bridges

Westside Road over Foreman Lane

Fair

Sonoma County, California · Over Forman Lane · Structure no. 20C0070

Built
1961
64 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete Continuous
Length
113 ft
3 main spans
Daily traffic
3,200
2015 count
Owner
County
County Highway Agency

About this bridge

Westside Road over Foreman Lane is a concrete continuous slab carrying Westside Road over Foreman Lane in Sonoma County, California. It was built in 1961, so it is 64 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 3,200 vehicles a day, roughly 1% of them trucks, projected to reach 3,291 by 2046. The structure is 113 ft (34.4 m) long and 41 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

Location

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CarriesWestside Road
CrossesForeman Lane
LocationOver Forman Lane
RouteCounty Highway 0
CountySonoma County
StateCalifornia
Coordinates38.58062, -122.87892
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.1 US tons
Inventory rating40.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length113 ft (34.4 m)
Longest span40 ft (12.2 m)
Deck width41 ft (12.4 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,200 (2015)
Projected traffic3,291 by 2046
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed19.3 mi (31 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Westside Road over Foreman Lane built?

It was built in 1961, making it 64 years old in 2025.

What condition is Westside Road over Foreman Lane in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2024.

How much traffic does Westside Road over Foreman Lane carry?

About 3,200 vehicles per day (2015 count), of which roughly 1% are trucks.

How long is Westside Road over Foreman Lane?

The structure is 113 ft (34.4 m) long with a longest span of 40 ft (12.2 m) and a deck 41 ft wide.

Who owns Westside Road over Foreman Lane?

It is owned by the County Highway Agency.