US Bridges

Waterfront RD over Peyton Slough

Fair

Contra Costa County, California · 0.4 MI E I-680 · Structure no. 28C0150

Built
1955
70 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete Continuous
Length
46 ft
3 main spans
Daily traffic
4,185
2013 count
Owner
County
County Highway Agency

About this bridge

Waterfront RD over Peyton Slough is a concrete continuous slab carrying Waterfront RD over Peyton Slough in Contra Costa County, California. It was built in 1955, so it is 70 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 6 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 4,185 vehicles a day, roughly 20% of them trucks, projected to reach 9,931 by 2046. The structure is 46 ft (14 m) long and 30 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesWaterfront RD
CrossesPeyton Slough
Location0.4 MI E I-680
RouteCounty Highway 0
CountyContra Costa County
StateCalifornia
Coordinates38.02581, -122.1056
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating31.7 US tons
Inventory rating19 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length46 ft (14 m)
Longest span15 ft (4.6 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,185 (2013)
Projected traffic9,931 by 2046
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 Waterfront RD over Peyton Slough built?

It was built in 1955, making it 70 years old in 2025.

What condition is Waterfront RD over Peyton Slough 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 September 2024.

How much traffic does Waterfront RD over Peyton Slough carry?

About 4,185 vehicles per day (2013 count), of which roughly 20% are trucks.

How long is Waterfront RD over Peyton Slough?

The structure is 46 ft (14 m) long with a longest span of 15 ft (4.6 m) and a deck 30 ft wide.

Who owns Waterfront RD over Peyton Slough?

It is owned by the County Highway Agency.