US Bridges

Sycamore Vly RD over San Ramon Creek

Fair

Contra Costa County, California · 0.5 MI E of SH 680 · Structure no. 28C0087

Built
1965
60 years old, rebuilt 1988
Condition
Fair
inspected March 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
77 ft
1 main span
Daily traffic
28,237
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Sycamore Vly RD over San Ramon Creek is a prestressed concrete stringer/multi-beam or girder carrying Sycamore Vly RD over San Ramon Creek in Contra Costa County, California. It was built in 1965 and reconstructed in 1988, so it is 60 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 28,237 vehicles a day, roughly 6% of them trucks, projected to reach 21,663 by 2040. The structure is 77 ft (23.5 m) long and 92 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSycamore Vly RD
CrossesSan Ramon Creek
Location0.5 MI E of SH 680
RouteCity Street 0
Coordinates37.81124, -121.98454
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length77 ft (23.5 m)
Longest span75 ft (22.9 m)
Deck width92 ft (28 m)
Roadway width72 ft (21.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,237 (2020)
Projected traffic21,663 by 2040
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 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 Sycamore Vly RD over San Ramon Creek built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1988.

What condition is Sycamore Vly 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 March 2022.

How much traffic does Sycamore Vly RD over San Ramon Creek carry?

About 28,237 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is Sycamore Vly RD over San Ramon Creek?

The structure is 77 ft (23.5 m) long with a longest span of 75 ft (22.9 m) and a deck 92 ft wide.

Who owns Sycamore Vly RD over San Ramon Creek?

It is owned by the City or Municipal Highway Agency.