US Bridges

Westside Drive over San Ramon Valley Blvd

Fair

Contra Costa County, California · .2 MI E of San Ramon Blvd · Structure no. 28C0505

Built
2000
25 years old
Condition
Fair
inspected March 2024
Type
Arch - Deck
Steel
Length
38 ft
1 main span
Daily traffic
100
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Westside Drive over San Ramon Valley Blvd is a steel arch - deck carrying Westside Drive over San Ramon Valley Blvd in Contra Costa County, California. It was built in 2000, so it is 25 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 100 vehicles a day, roughly 1% of them trucks, projected to reach 307 by 2042. The structure is 38 ft (11.6 m) long. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesWestside Drive
CrossesSan Ramon Valley Blvd
Location.2 MI E of San Ramon Blvd
RouteCity Street 0
CountyContra Costa County
StateCalifornia
Coordinates37.73464, -121.95415
Functional classRural 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
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeArch - Deck
MaterialSteel
DeckNot applicable
Main spans1
Design loadHS 20 + Mod
Structure length38 ft (11.6 m)
Longest span38 ft (11.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2020)
Projected traffic307 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed2.5 mi (4 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 Westside Drive over San Ramon Valley Blvd built?

It was built in 2000, making it 25 years old in 2025.

What condition is Westside Drive over San Ramon Valley Blvd 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 2024.

How much traffic does Westside Drive over San Ramon Valley Blvd carry?

About 100 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Westside Drive over San Ramon Valley Blvd?

The structure is 38 ft (11.6 m) long with a longest span of 38 ft (11.6 m).

Who owns Westside Drive over San Ramon Valley Blvd?

It is owned by the City or Municipal Highway Agency.