US Bridges

Freeman Road over Las Trampas Creek

Fair

Contra Costa County, California · 0.1 MI West of Stanley Ct · Structure no. 28C0389

Built
1946
79 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
124 ft
4 main spans
Daily traffic
625
2013 count
Owner
County
County Highway Agency

About this bridge

Freeman Road over Las Trampas Creek is a steel stringer/multi-beam or girder carrying Freeman Road over Las Trampas Creek in Contra Costa County, California. It was built in 1946, so it is 79 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 5 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 625 vehicles a day, roughly 2% of them trucks, projected to reach 765 by 2046. The structure is 124 ft (37.8 m) long and 29 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesFreeman Road
CrossesLas Trampas Creek
Location0.1 MI West of Stanley Ct
RouteCounty Highway 0
CountyContra Costa County
StateCalifornia
Coordinates37.88578, -122.08592
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating23.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadUnknown
Structure length124 ft (37.8 m)
Longest span27 ft (8.2 m)
Deck width29 ft (8.9 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic625 (2013)
Projected traffic765 by 2046
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Freeman Road over Las Trampas Creek built?

It was built in 1946, making it 79 years old in 2025.

What condition is Freeman Road over Las Trampas 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 November 2024.

How much traffic does Freeman Road over Las Trampas Creek carry?

About 625 vehicles per day (2013 count), of which roughly 2% are trucks.

How long is Freeman Road over Las Trampas Creek?

The structure is 124 ft (37.8 m) long with a longest span of 27 ft (8.2 m) and a deck 29 ft wide.

Who owns Freeman Road over Las Trampas Creek?

It is owned by the County Highway Agency.