US Bridges

State Route 120 over Wildcat Creek

Good

Stanislaus County, California · 10-STA-120-R15.04 · Structure no. 38 0009

Built
1948
77 years old
Condition
Good
inspected March 2024
Type
Culvert
Steel
Length
35 ft
2 main spans
Daily traffic
12,000
2015 count
Owner
State
State Highway Agency

About this bridge

State Route 120 over Wildcat Creek is a steel culvert carrying State Route 120 over Wildcat Creek in Stanislaus County, California. It was built in 1948, so it is 77 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 12,000 vehicles a day, roughly 12% of them trucks, projected to reach 27,857 by 2042. The structure is 35 ft (10.7 m) long. If it were closed, the detour would be 5 mi (8 km).

CarriesState Route 120
CrossesWildcat Creek
Location10-STA-120-R15.04
RouteState Highway 120
Coordinates37.80676, -120.68663
Functional classRural Principal Arterial - Other

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadUnknown
Structure length35 ft (10.7 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,000 (2015)
Projected traffic27,857 by 2042
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 State Route 120 over Wildcat Creek built?

It was built in 1948, making it 77 years old in 2025.

What condition is State Route 120 over Wildcat 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 March 2024.

How much traffic does State Route 120 over Wildcat Creek carry?

About 12,000 vehicles per day (2015 count), of which roughly 12% are trucks.

How long is State Route 120 over Wildcat Creek?

The structure is 35 ft (10.7 m) long with a longest span of 14 ft (4.3 m).

Who owns State Route 120 over Wildcat Creek?

It is owned by the State Highway Agency.