US Bridges

Case Avenue over Mission Creek

Fair

Alameda County, California · 1600 Ft W of Sunol Blvd · Structure no. 33C0453

Built
2004
21 years old
Condition
Fair
inspected October 2024
Type
Slab
Prestressed Concrete
Length
65 ft
1 main span
Daily traffic
1,100
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Case Avenue over Mission Creek is a prestressed concrete slab carrying Case Avenue over Mission Creek in Alameda County, California. It was built in 2004, so it is 21 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 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 1,100 vehicles a day, roughly 1% of them trucks, projected to reach 14,674 by 2042. The structure is 65 ft (19.9 m) long and 63 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesCase Avenue
CrossesMission Creek
Location1600 Ft W of Sunol Blvd
RouteCity Street 0
CountyAlameda County
StateCalifornia
Coordinates37.65007, -121.88604
Functional classUrban Local

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.9 US tons
Inventory rating11.8 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length65 ft (19.9 m)
Longest span60 ft (18.3 m)
Deck width63 ft (19.2 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,100 (2023)
Projected traffic14,674 by 2042
Trucks1%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 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 Case Avenue over Mission Creek built?

It was built in 2004, making it 21 years old in 2025.

What condition is Case Avenue over Mission 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 October 2024.

How much traffic does Case Avenue over Mission Creek carry?

About 1,100 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Case Avenue over Mission Creek?

The structure is 65 ft (19.9 m) long with a longest span of 60 ft (18.3 m) and a deck 63 ft wide.

Who owns Case Avenue over Mission Creek?

It is owned by the City or Municipal Highway Agency.