US Bridges

Sycamore Valley RD over Sycamore Creek

Good

Contra Costa County, California · 0.2 MI W Camino Tassajara · Structure no. 28C0441

Built
1974
51 years old
Condition
Good
inspected March 2022
Type
Culvert
Concrete Continuous
Length
28 ft
2 main spans
Daily traffic
28,237
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Sycamore Valley RD over Sycamore Creek is a concrete continuous culvert carrying Sycamore Valley RD over Sycamore Creek in Contra Costa County, California. It was built in 1974, so it is 51 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 28,237 vehicles a day, roughly 6% of them trucks, projected to reach 20,580 by 2040. The structure is 28 ft (8.5 m) long and 97 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSycamore Valley RD
CrossesSycamore Creek
Location0.2 MI W Camino Tassajara
RouteCity Street 0
Coordinates37.81471, -121.97067
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
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 adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span13 ft (4.1 m)
Deck width97 ft (29.5 m)
Roadway width82 ft (24.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,237 (2020)
Projected traffic20,580 by 2040
Trucks6%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Sycamore Valley RD over Sycamore Creek built?

It was built in 1974, making it 51 years old in 2025.

What condition is Sycamore Valley RD over Sycamore Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2022.

How much traffic does Sycamore Valley RD over Sycamore Creek carry?

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

How long is Sycamore Valley RD over Sycamore Creek?

The structure is 28 ft (8.5 m) long with a longest span of 13 ft (4.1 m) and a deck 97 ft wide.

Who owns Sycamore Valley RD over Sycamore Creek?

It is owned by the City or Municipal Highway Agency.