US Bridges

State Route 4 WB over Rodeo Creek

Fair

Contra Costa County, California · 04-CC-004-R1.90L · Structure no. 28 0038L

Built
2001
24 years old
Condition
Fair
inspected May 2024
Type
Slab
Concrete Continuous
Length
164 ft
5 main spans
Daily traffic
20,250
2018 count
Owner
State
State Highway Agency

About this bridge

State Route 4 WB over Rodeo Creek is a concrete continuous slab carrying State Route 4 WB over Rodeo Creek in Contra Costa County, California. It was built in 2001, so it is 24 years old, younger 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 20,250 vehicles a day, roughly 8% of them trucks, projected to reach 40,584 by 2042. The structure is 164 ft (50 m) long and 48 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesState Route 4 WB
CrossesRodeo Creek
Location04-CC-004-R1.90L
RouteState Highway 4
Coordinates38.01416, -122.23865
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionMay 2024
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 geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length164 ft (50 m)
Longest span33 ft (10 m)
Deck width48 ft (14.7 m)
Roadway width45 ft (13.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,250 (2018)
Projected traffic40,584 by 2042
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 4 WB over Rodeo Creek built?

It was built in 2001, making it 24 years old in 2025.

What condition is State Route 4 WB over Rodeo 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 May 2024.

How much traffic does State Route 4 WB over Rodeo Creek carry?

About 20,250 vehicles per day (2018 count), of which roughly 8% are trucks.

How long is State Route 4 WB over Rodeo Creek?

The structure is 164 ft (50 m) long with a longest span of 33 ft (10 m) and a deck 48 ft wide.

Who owns State Route 4 WB over Rodeo Creek?

It is owned by the State Highway Agency.