US Bridges

Interstate 8 over Jackson DR

Fair

San Diego County, California · 11-SD-008-11.76-LMSA · Structure no. 57 0330

Built
1956
69 years old, rebuilt 1990
Condition
Fair
inspected May 2024
Type
Tee Beam
Concrete Continuous
Length
138 ft
3 main spans
Daily traffic
194,000
2014 count
Owner
State
State Highway Agency

About this bridge

Interstate 8 over Jackson DR is a concrete continuous tee beam carrying Interstate 8 over Jackson DR in San Diego County, California. It was built in 1956 and reconstructed in 1990, so it is 69 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 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 194,000 vehicles a day, projected to reach 220,000 by 2044. The structure is 138 ft (42.1 m) long and 214 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesInterstate 8
CrossesJackson DR
Location11-SD-008-11.76-LMSA
RouteInterstate 8
CountySan Diego County
StateCalifornia
Coordinates32.77463, -117.01106
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.9 US tons
Inventory rating22.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length138 ft (42.1 m)
Longest span67 ft (20.4 m)
Deck width214 ft (65.2 m)
Roadway width208 ft (63.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic194,000 (2014)
Projected traffic220,000 by 2044
Trucks0%
Lanes on structure13
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate 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 Interstate 8 over Jackson DR built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1990.

What condition is Interstate 8 over Jackson DR 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 May 2024.

How much traffic does Interstate 8 over Jackson DR carry?

About 194,000 vehicles per day (2014 count).

How long is Interstate 8 over Jackson DR?

The structure is 138 ft (42.1 m) long with a longest span of 67 ft (20.4 m) and a deck 214 ft wide.

Who owns Interstate 8 over Jackson DR?

It is owned by the State Highway Agency.