US Bridges

Marsh Creek RD over Marsh Creek

Fair

Contra Costa County, California · 6.8 MI E Morgan Territory · Structure no. 28C0144

Built
1981
44 years old
Condition
Fair
inspected July 2024
Type
Tee Beam
Prestressed Concrete Continuous
Length
80 ft
2 main spans
Daily traffic
3,979
2013 count
Owner
County
County Highway Agency

About this bridge

Marsh Creek RD over Marsh Creek is a prestressed concrete continuous tee beam carrying Marsh Creek RD over Marsh Creek in Contra Costa County, California. It was built in 1981, so it is 44 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 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 3,979 vehicles a day, roughly 7% of them trucks, projected to reach 3,133 by 2046. The structure is 80 ft (24.3 m) long and 42 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

CarriesMarsh Creek RD
CrossesMarsh Creek
Location6.8 MI E Morgan Territory
RouteCounty Highway 0
Coordinates37.87966, -121.77264
Functional classRural Minor 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.2 US tons
Inventory rating37.1 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length80 ft (24.3 m)
Longest span39 ft (12 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,979 (2013)
Projected traffic3,133 by 2046
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 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 Marsh Creek RD over Marsh Creek built?

It was built in 1981, making it 44 years old in 2025.

What condition is Marsh Creek RD over Marsh 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 July 2024.

How much traffic does Marsh Creek RD over Marsh Creek carry?

About 3,979 vehicles per day (2013 count), of which roughly 7% are trucks.

How long is Marsh Creek RD over Marsh Creek?

The structure is 80 ft (24.3 m) long with a longest span of 39 ft (12 m) and a deck 42 ft wide.

Who owns Marsh Creek RD over Marsh Creek?

It is owned by the County Highway Agency.