US Bridges

Interstate 805 over Bonita Road

Fair

San Diego County, California · 11-SD-805-7.76 · Structure no. 57 0637

Built
1975
50 years old, rebuilt 2014
Condition
Fair
inspected June 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
297 ft
3 main spans
Daily traffic
272,000
2020 count
Owner
State
State Highway Agency

About this bridge

Interstate 805 over Bonita Road is a prestressed concrete continuous box beam or girders - multiple carrying Interstate 805 over Bonita Road in San Diego County, California. It was built in 1975 and reconstructed in 2014, so it is 50 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 272,000 vehicles a day, roughly 7% of them trucks, projected to reach 292,000 by 2042. The structure is 297 ft (90.4 m) long and 197 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesInterstate 805
CrossesBonita Road
Location11-SD-805-7.76
RouteInterstate 805
Coordinates32.64813, -117.0614
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 alignment9: Superior to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length297 ft (90.4 m)
Longest span160 ft (48.9 m)
Deck width197 ft (60 m)
Roadway width192 ft (58.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic272,000 (2020)
Projected traffic292,000 by 2042
Trucks7%
Lanes on structure12
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 805 over Bonita Road built?

It was built in 1975, making it 50 years old in 2025. It was reconstructed in 2014.

What condition is Interstate 805 over Bonita Road 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 805 over Bonita Road carry?

About 272,000 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is Interstate 805 over Bonita Road?

The structure is 297 ft (90.4 m) long with a longest span of 160 ft (48.9 m) and a deck 197 ft wide.

Who owns Interstate 805 over Bonita Road?

It is owned by the State Highway Agency.