US Bridges

West Olive ST over Santa Rosa Creek

Fair

Sonoma County, California · West Olive ST · Structure no. 20C0054

Built
1962
63 years old
Condition
Fair
inspected June 2024
Type
Tee Beam
Concrete Continuous
Length
169 ft
3 main spans
Daily traffic
8,200
2018 count
Owner
City
City or Municipal Highway Agency

About this bridge

West Olive ST over Santa Rosa Creek is a concrete continuous tee beam carrying West Olive ST over Santa Rosa Creek in Sonoma County, California. It was built in 1962, so it is 63 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 8,200 vehicles a day, roughly 2% of them trucks, projected to reach 20,067 by 2044. The structure is 169 ft (51.5 m) long and 52 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesWest Olive ST
CrossesSanta Rosa Creek
LocationWest Olive ST
RouteCity Street 0
CountySonoma County
StateCalifornia
Coordinates38.43459, -122.71944
Functional classUrban 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.7 US tons
Inventory rating27.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length169 ft (51.5 m)
Longest span56 ft (17 m)
Deck width52 ft (15.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,200 (2018)
Projected traffic20,067 by 2044
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was West Olive ST over Santa Rosa Creek built?

It was built in 1962, making it 63 years old in 2025.

What condition is West Olive ST over Santa Rosa Creek 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 June 2024.

How much traffic does West Olive ST over Santa Rosa Creek carry?

About 8,200 vehicles per day (2018 count), of which roughly 2% are trucks.

How long is West Olive ST over Santa Rosa Creek?

The structure is 169 ft (51.5 m) long with a longest span of 56 ft (17 m) and a deck 52 ft wide.

Who owns West Olive ST over Santa Rosa Creek?

It is owned by the City or Municipal Highway Agency.