US Bridges

Union School Road over West Fork Stillwater Crk

Good

Shasta County, California · 0.2 MI W Old Oregon Trail · Structure no. 06C0282

Built
1968
57 years old
Condition
Good
inspected September 2023
Type
Slab
Concrete Continuous
Length
61 ft
2 main spans
Daily traffic
1,175
2000 count
Owner
County
County Highway Agency

About this bridge

Union School Road over West Fork Stillwater Crk is a concrete continuous slab carrying Union School Road over West Fork Stillwater Crk in Shasta County, California. It was built in 1968, so it is 57 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 1,175 vehicles a day, roughly 5% of them trucks, projected to reach 535 by 2042. The structure is 61 ft (18.6 m) long and 29 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesUnion School Road
CrossesWest Fork Stillwater Crk
Location0.2 MI W Old Oregon Trail
RouteCounty Highway 0
Coordinates40.6888, -122.32174
Functional classRural Local

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 inspectionSeptember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110 US tons
Inventory rating66.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length61 ft (18.6 m)
Longest span31 ft (9.3 m)
Deck width29 ft (8.7 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,175 (2000)
Projected traffic535 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Union School Road over West Fork Stillwater Crk built?

It was built in 1968, making it 57 years old in 2025.

What condition is Union School Road over West Fork Stillwater Crk 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 September 2023.

How much traffic does Union School Road over West Fork Stillwater Crk carry?

About 1,175 vehicles per day (2000 count), of which roughly 5% are trucks.

How long is Union School Road over West Fork Stillwater Crk?

The structure is 61 ft (18.6 m) long with a longest span of 31 ft (9.3 m) and a deck 29 ft wide.

Who owns Union School Road over West Fork Stillwater Crk?

It is owned by the County Highway Agency.