US Bridges

Stone Valley RD over San Ramon Creek

Fair

Contra Costa County, California · 0.1 MI E Danville Blvd · Structure no. 28C0068

Built
1964
61 years old
Condition
Fair
inspected November 2024
Type
Tee Beam
Concrete Continuous
Length
161 ft
3 main spans
Daily traffic
23,330
2013 count
Owner
County
County Highway Agency

About this bridge

Stone Valley RD over San Ramon Creek is a concrete continuous tee beam carrying Stone Valley RD over San Ramon Creek in Contra Costa County, California. It was built in 1964, so it is 61 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 23,330 vehicles a day, roughly 10% of them trucks, projected to reach 13,216 by 2046. The structure is 161 ft (49.1 m) long and 76 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesStone Valley RD
CrossesSan Ramon Creek
Location0.1 MI E Danville Blvd
RouteCounty Highway 0
Coordinates37.85049, -122.03157
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating53.9 US tons
Inventory rating41.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length161 ft (49.1 m)
Longest span65 ft (19.8 m)
Deck width76 ft (23.2 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,330 (2013)
Projected traffic13,216 by 2046
Trucks10%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Stone Valley RD over San Ramon Creek built?

It was built in 1964, making it 61 years old in 2025.

What condition is Stone Valley RD over San Ramon 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 Stone Valley RD over San Ramon Creek carry?

About 23,330 vehicles per day (2013 count), of which roughly 10% are trucks.

How long is Stone Valley RD over San Ramon Creek?

The structure is 161 ft (49.1 m) long with a longest span of 65 ft (19.8 m) and a deck 76 ft wide.

Who owns Stone Valley RD over San Ramon Creek?

It is owned by the County Highway Agency.