US Bridges

Old HWY 99 W over Gay Creek

Good

Tehama County, California · 0.2 MI N of Glenn CO Line · Structure no. 08C0120

Built
1914
111 years old, rebuilt 1953
Condition
Good
inspected April 2023
Type
Tee Beam
Concrete Continuous
Length
63 ft
3 main spans
Daily traffic
2,001
2013 count
Owner
County
County Highway Agency

About this bridge

Old HWY 99 W over Gay Creek is a concrete continuous tee beam carrying Old HWY 99 W over Gay 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,001 vehicles a day, roughly 8% of them trucks, projected to reach 2,314 by 2041. The structure is 63 ft (19.2 m) long and 40 ft wide. If it were closed, the detour would be 24.2 mi (39 km).

CarriesOld HWY 99 W
CrossesGay Creek
Location0.2 MI N of Glenn CO Line
RouteCounty Highway 0
Coordinates39.80004, -122.19725
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
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 geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length63 ft (19.2 m)
Longest span20 ft (6.1 m)
Deck width40 ft (12.3 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,001 (2013)
Projected traffic2,314 by 2041
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.2 mi (39 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 Old HWY 99 W over Gay 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 Gay Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2023.

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

About 2,001 vehicles per day (2013 count), of which roughly 8% are trucks.

How long is Old HWY 99 W over Gay Creek?

The structure is 63 ft (19.2 m) long with a longest span of 20 ft (6.1 m) and a deck 40 ft wide.

Who owns Old HWY 99 W over Gay Creek?

It is owned by the County Highway Agency.