US Bridges

Brim Road over Bear Creek

Fair

Colusa County, California · 0.1 MI W Bear Valley Road · Structure no. 15C0130

Built
1920
105 years old
Condition
Fair
inspected October 2024
Type
Tee Beam
Concrete
Length
22 ft
1 main span
Daily traffic
15
2015 count
Owner
County
County Highway Agency

About this bridge

Brim Road over Bear Creek is a concrete tee beam carrying Brim Road over Bear Creek in Colusa County, California. It was built in 1920, so it is 105 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 5 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 15 vehicles a day, roughly 10% of them trucks, projected to reach 51 by 2045. The structure is 22 ft (6.7 m) long and 20 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesBrim Road
CrossesBear Creek
Location0.1 MI W Bear Valley Road
RouteCounty Highway 0
CountyColusa County
StateCalifornia
Coordinates39.16412, -122.44214
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.1 US tons
Inventory rating18.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span20 ft (6.2 m)
Deck width20 ft (6.2 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2015)
Projected traffic51 by 2045
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Brim Road over Bear Creek built?

It was built in 1920, making it 105 years old in 2025.

What condition is Brim Road over Bear 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 October 2024.

How much traffic does Brim Road over Bear Creek carry?

About 15 vehicles per day (2015 count), of which roughly 10% are trucks.

How long is Brim Road over Bear Creek?

The structure is 22 ft (6.7 m) long with a longest span of 20 ft (6.2 m) and a deck 20 ft wide.

Who owns Brim Road over Bear Creek?

It is owned by the County Highway Agency.