US Bridges

Interstate 805 over Telegraph Canyon Road

Good

San Diego County, California · 11-SD-805-6.06-CHV · Structure no. 57 0635

Built
1971
54 years old, rebuilt 2014
Condition
Good
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
248 ft
2 main spans
Daily traffic
254,000
2020 count
Owner
State
State Highway Agency

About this bridge

Interstate 805 over Telegraph Canyon Road is a prestressed concrete continuous box beam or girders - multiple carrying Interstate 805 over Telegraph Canyon Road in San Diego County, California. It was built in 1971 and reconstructed in 2014, so it is 54 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 254,000 vehicles a day, roughly 7% of them trucks, projected to reach 293,000 by 2042. The structure is 248 ft (75.6 m) long and 164 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesInterstate 805
CrossesTelegraph Canyon Road
Location11-SD-805-6.06-CHV
RouteInterstate 805
Coordinates32.62871, -117.04384
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 geometry9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating48.6 US tons
Inventory rating37.5 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length248 ft (75.6 m)
Longest span136 ft (41.5 m)
Deck width164 ft (50 m)
Roadway width160 ft (48.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic254,000 (2020)
Projected traffic293,000 by 2042
Trucks7%
Lanes on structure9
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 Telegraph Canyon Road built?

It was built in 1971, making it 54 years old in 2025. It was reconstructed in 2014.

What condition is Interstate 805 over Telegraph Canyon Road 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 Interstate 805 over Telegraph Canyon Road carry?

About 254,000 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is Interstate 805 over Telegraph Canyon Road?

The structure is 248 ft (75.6 m) long with a longest span of 136 ft (41.5 m) and a deck 164 ft wide.

Who owns Interstate 805 over Telegraph Canyon Road?

It is owned by the State Highway Agency.