US Bridges

State Route 104 over Clay Creek

Good

Sacramento County, California · 03-SAC-104-9.94 · Structure no. 24 0038

Built
1968
57 years old
Condition
Good
inspected January 2023
Type
Culvert
Concrete Continuous
Length
32 ft
3 main spans
Daily traffic
4,300
2008 count
Owner
State
State Highway Agency

About this bridge

State Route 104 over Clay Creek is a concrete continuous culvert carrying State Route 104 over Clay Creek in Sacramento 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 4,300 vehicles a day, roughly 6% of them trucks, projected to reach 8,990 by 2041. The structure is 32 ft (9.8 m) long and 34 ft wide. If it were closed, the detour would be 31.7 mi (51 km).

CarriesState Route 104
CrossesClay Creek
Location03-SAC-104-9.94
RouteState Highway 104
Coordinates38.34299, -121.15062
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length32 ft (9.8 m)
Longest span10 ft (3 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,300 (2008)
Projected traffic8,990 by 2041
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.7 mi (51 km)
TollOn a free road
National Highway SystemNo

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 104 over Clay Creek built?

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

What condition is State Route 104 over Clay 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 January 2023.

How much traffic does State Route 104 over Clay Creek carry?

About 4,300 vehicles per day (2008 count), of which roughly 6% are trucks.

How long is State Route 104 over Clay Creek?

The structure is 32 ft (9.8 m) long with a longest span of 10 ft (3 m) and a deck 34 ft wide.

Who owns State Route 104 over Clay Creek?

It is owned by the State Highway Agency.