US Bridges

Old HWY 99 W over Brannin Creek

Poor

Tehama County, California · 5.7 MI N Glenn CO Line · Structure no. 08C0124

Built
1914
111 years old, rebuilt 1953
Condition
Poor
inspected December 2023
Type
Tee Beam
Concrete Continuous
Length
164 ft
7 main spans
Daily traffic
2,799
2018 count
Owner
County
County Highway Agency

About this bridge

Old HWY 99 W over Brannin Creek is a concrete continuous tee beam carrying Old HWY 99 W over Brannin Creek in Tehama County, California. It was built in 1914 and reconstructed in 1953, so it is 111 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 2,799 vehicles a day, roughly 3% of them trucks, projected to reach 3,500 by 2043. The structure is 164 ft (50 m) long and 41 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesOld HWY 99 W
CrossesBrannin Creek
Location5.7 MI N Glenn CO Line
RouteCounty Highway 0
Coordinates39.87655, -122.19733
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadUnknown
Structure length164 ft (50 m)
Longest span20 ft (6.1 m)
Deck width41 ft (12.4 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,799 (2018)
Projected traffic3,500 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.4 million (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Old HWY 99 W over Brannin Creek built?

It was built in 1914, making it 111 years old in 2025. It was reconstructed in 1953.

What condition is Old HWY 99 W over Brannin Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in December 2023.

How much traffic does Old HWY 99 W over Brannin Creek carry?

About 2,799 vehicles per day (2018 count), of which roughly 3% are trucks.

How long is Old HWY 99 W over Brannin Creek?

The structure is 164 ft (50 m) long with a longest span of 20 ft (6.1 m) and a deck 41 ft wide.

Who owns Old HWY 99 W over Brannin Creek?

It is owned by the County Highway Agency.