US Bridges

Park Avenue over Wildcat Creek

Fair

Contra Costa County, California · 0.4 MI E Marin Ave · Structure no. 28C0432

Built
1977
48 years old
Condition
Fair
inspected September 2024
Type
Slab
Prestressed Concrete
Length
32 ft
1 main span
Daily traffic
100
2015 count
Owner
County
County Highway Agency

About this bridge

Park Avenue over Wildcat Creek is a prestressed concrete slab carrying Park Avenue over Wildcat Creek in Contra Costa County, California. It was built in 1977, so it is 48 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 100 vehicles a day, roughly 1% of them trucks, projected to reach 321 by 2045. The structure is 32 ft (9.8 m) long and 17 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesPark Avenue
CrossesWildcat Creek
Location0.4 MI E Marin Ave
RouteCounty Highway 0
CountyContra Costa County
StateCalifornia
Coordinates37.95099, -122.31634
Functional classUrban Local

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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating35.1 US tons
Inventory rating16.4 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span31 ft (9.4 m)
Deck width17 ft (5.3 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2015)
Projected traffic321 by 2045
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed123.7 mi (199 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 Park Avenue over Wildcat Creek built?

It was built in 1977, making it 48 years old in 2025.

What condition is Park Avenue over Wildcat 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 September 2024.

How much traffic does Park Avenue over Wildcat Creek carry?

About 100 vehicles per day (2015 count), of which roughly 1% are trucks.

How long is Park Avenue over Wildcat Creek?

The structure is 32 ft (9.8 m) long with a longest span of 31 ft (9.4 m) and a deck 17 ft wide.

Who owns Park Avenue over Wildcat Creek?

It is owned by the County Highway Agency.