US Bridges

Interstate 8 over Ballantyne Lane

Fair

San Diego County, California · 11-SD-008-16.05-ECJ · Structure no. 57 0366

Built
1961
64 years old, rebuilt 1968
Condition
Fair
inspected June 2024
Type
Box Beam or Girders - Multiple
Concrete
Length
60 ft
1 main span
Daily traffic
134,000
2014 count
Owner
State
State Highway Agency

About this bridge

Interstate 8 over Ballantyne Lane is a concrete box beam or girders - multiple carrying Interstate 8 over Ballantyne Lane in San Diego County, California. It was built in 1961 and reconstructed in 1968, so it is 64 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 134,000 vehicles a day, roughly 5% of them trucks, projected to reach 238,000 by 2044. The structure is 60 ft (18.3 m) long and 144 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesInterstate 8
CrossesBallantyne Lane
Location11-SD-008-16.05-ECJ
RouteInterstate 8
Coordinates32.80288, -116.95824
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 inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating93.6 US tons
Inventory rating35.7 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span60 ft (18.3 m)
Deck width144 ft (44 m)
Roadway width140 ft (42.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic134,000 (2014)
Projected traffic238,000 by 2044
Trucks5%
Lanes on structure7
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 Ballantyne Lane built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1968.

What condition is Interstate 8 over Ballantyne Lane 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 June 2024.

How much traffic does Interstate 8 over Ballantyne Lane carry?

About 134,000 vehicles per day (2014 count), of which roughly 5% are trucks.

How long is Interstate 8 over Ballantyne Lane?

The structure is 60 ft (18.3 m) long with a longest span of 60 ft (18.3 m) and a deck 144 ft wide.

Who owns Interstate 8 over Ballantyne Lane?

It is owned by the State Highway Agency.