US Bridges

Detroit Ave over Pine Creek

Good

Contra Costa County, California · At Whitman RD · Structure no. 28C0358

Built
1960
65 years old
Condition
Good
inspected November 2021
Type
Slab
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
4,493
1970 count
Owner
City
City or Municipal Highway Agency

About this bridge

Detroit Ave over Pine Creek is a prestressed concrete slab carrying Detroit Ave over Pine Creek in Contra Costa County, California. It was built in 1960, so it is 65 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 4,493 vehicles a day, roughly 3% of them trucks, projected to reach 5,345 by 2038. The structure is 50 ft (15.2 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesDetroit Ave
CrossesPine Creek
LocationAt Whitman RD
RouteCity Street 0
Coordinates37.95264, -122.028
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating97.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span49 ft (14.9 m)
Deck width33 ft (10 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,493 (1970)
Projected traffic5,345 by 2038
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Detroit Ave over Pine Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is Detroit Ave over Pine 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 November 2021.

How much traffic does Detroit Ave over Pine Creek carry?

About 4,493 vehicles per day (1970 count), of which roughly 3% are trucks.

How long is Detroit Ave over Pine Creek?

The structure is 50 ft (15.2 m) long with a longest span of 49 ft (14.9 m) and a deck 33 ft wide.

Who owns Detroit Ave over Pine Creek?

It is owned by the City or Municipal Highway Agency.