US Bridges

State Route 104 over Skunk Creek

Fair

Sacramento County, California · 03-SAC-104-4.30 · Structure no. 24 0042

Built
1918
107 years old, rebuilt 1968
Condition
Fair
inspected January 2023
Type
Slab
Concrete Continuous
Length
33 ft
3 main spans
Daily traffic
4,300
2005 count
Owner
State
State Highway Agency

About this bridge

State Route 104 over Skunk Creek is a concrete continuous slab carrying State Route 104 over Skunk Creek in Sacramento County, California. It was built in 1918 and reconstructed in 1968, so it is 107 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 4,300 vehicles a day, roughly 6% of them trucks, projected to reach 8,677 by 2040. The structure is 33 ft (10.2 m) long and 34 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesState Route 104
CrossesSkunk Creek
Location03-SAC-104-4.30
RouteState Highway 104
Coordinates38.29995, -121.23671
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 alignment8: Equal to present desirable criteria
Operating rating64.6 US tons
Inventory rating38.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length33 ft (10.2 m)
Longest span10 ft (3.2 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,300 (2005)
Projected traffic8,677 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Skunk Creek built?

It was built in 1918, making it 107 years old in 2025. It was reconstructed in 1968.

What condition is State Route 104 over Skunk Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2023.

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

About 4,300 vehicles per day (2005 count), of which roughly 6% are trucks.

How long is State Route 104 over Skunk Creek?

The structure is 33 ft (10.2 m) long with a longest span of 10 ft (3.2 m) and a deck 34 ft wide.

Who owns State Route 104 over Skunk Creek?

It is owned by the State Highway Agency.