US Bridges

12th ST-E980 On-Rp over E980-17th ST Off-Ramp

Good

Alameda County, California · 04-ALA-980-0.62-OAK · Structure no. 33 0479S

Built
1981
44 years old
Condition
Good
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
230 ft
2 main spans
Daily traffic
13,000
2012 count
Owner
State
State Highway Agency

About this bridge

12th ST-E980 On-Rp over E980-17th ST Off-Ramp is a prestressed concrete continuous box beam or girders - multiple carrying 12th ST-E980 On-Rp over E980-17th ST Off-Ramp in Alameda County, California. It was built in 1981, so it is 44 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 13,000 vehicles a day, roughly 2% of them trucks, projected to reach 14,001 by 2044. The structure is 230 ft (70.1 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries12th ST-E980 On-Rp
CrossesE980-17th ST Off-Ramp
Location04-ALA-980-0.62-OAK
RouteInterstate 980
CountyAlameda County
StateCalifornia
Coordinates37.80569, -122.27791
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length230 ft (70.1 m)
Longest span115 ft (35.1 m)
Deck width36 ft (10.9 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,000 (2012)
Projected traffic14,001 by 2044
Trucks2%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 12th ST-E980 On-Rp over E980-17th ST Off-Ramp built?

It was built in 1981, making it 44 years old in 2025.

What condition is 12th ST-E980 On-Rp over E980-17th ST Off-Ramp 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 May 2024.

How much traffic does 12th ST-E980 On-Rp over E980-17th ST Off-Ramp carry?

About 13,000 vehicles per day (2012 count), of which roughly 2% are trucks.

How long is 12th ST-E980 On-Rp over E980-17th ST Off-Ramp?

The structure is 230 ft (70.1 m) long with a longest span of 115 ft (35.1 m) and a deck 36 ft wide.

Who owns 12th ST-E980 On-Rp over E980-17th ST Off-Ramp?

It is owned by the State Highway Agency.