US Bridges

Balfour Rd. over Marsh Creek

Fair

Contra Costa County, California · 1.1 MI West of SR 4 · Structure no. 28C0126L

Built
1996
29 years old
Condition
Fair
inspected January 2025
Type
Slab
Concrete Continuous
Length
77 ft
3 main spans
Daily traffic
10,600
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Balfour Rd. over Marsh Creek is a concrete continuous slab carrying Balfour Rd. over Marsh Creek in Contra Costa County, California. It was built in 1996, so it is 29 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 10,600 vehicles a day, roughly 2% of them trucks, projected to reach 15,612 by 2043. The structure is 77 ft (23.5 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesBalfour Rd.
CrossesMarsh Creek
Location1.1 MI West of SR 4
RouteCity Street 0
CountyContra Costa County
StateCalifornia
Coordinates37.92544, -121.71034
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating41.1 US tons
Inventory rating27.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length77 ft (23.5 m)
Longest span29 ft (8.8 m)
Deck width44 ft (13.3 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,600 (2020)
Projected traffic15,612 by 2043
Trucks2%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 Balfour Rd. over Marsh Creek built?

It was built in 1996, making it 29 years old in 2025.

What condition is Balfour 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 January 2025.

How much traffic does Balfour Rd. over Marsh Creek carry?

About 10,600 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Balfour Rd. over Marsh Creek?

The structure is 77 ft (23.5 m) long with a longest span of 29 ft (8.8 m) and a deck 44 ft wide.

Who owns Balfour Rd. over Marsh Creek?

It is owned by the City or Municipal Highway Agency.