US Bridges

Marsh Creek RD over Marsh Creek

Fair

Contra Costa County, California · 7.3 MI E Morgan Terity RD · Structure no. 28C0143

Built
1934
91 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
40 ft
1 main span
Daily traffic
5,588
2013 count
Owner
County
County Highway Agency

About this bridge

Marsh Creek RD over Marsh Creek is a steel stringer/multi-beam or girder carrying Marsh Creek RD over Marsh Creek in Contra Costa County, California. It was built in 1934, so it is 91 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 5,588 vehicles a day, roughly 7% of them trucks, projected to reach 8,637 by 2046. The structure is 40 ft (12.2 m) long and 22 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

Location

Open in Google Maps
CarriesMarsh Creek RD
CrossesMarsh Creek
Location7.3 MI E Morgan Terity RD
RouteCounty Highway 0
CountyContra Costa County
StateCalifornia
Coordinates37.89256, -121.79902
Functional classRural Major Collector

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating24.3 US tons
Inventory rating18.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length40 ft (12.2 m)
Longest span38 ft (11.7 m)
Deck width22 ft (6.6 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,588 (2013)
Projected traffic8,637 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Marsh Creek RD over Marsh Creek built?

It was built in 1934, making it 91 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 5,588 vehicles per day (2013 count), of which roughly 7% are trucks.

How long is Marsh Creek RD over Marsh Creek?

The structure is 40 ft (12.2 m) long with a longest span of 38 ft (11.7 m) and a deck 22 ft wide.

Who owns Marsh Creek RD over Marsh Creek?

It is owned by the County Highway Agency.