US Bridges

Interstate 8 over El Cajon Creek

Good

San Diego County, California · 11-SD-008-15.63-ECJ · Structure no. 57 0465

Built
1961
64 years old, rebuilt 1968
Condition
Good
inspected June 2024
Type
Culvert
Concrete
Length
32 ft
3 main spans
Daily traffic
189,000
2014 count
Owner
State
State Highway Agency

About this bridge

Interstate 8 over El Cajon Creek is a concrete culvert carrying Interstate 8 over El Cajon Creek 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 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 189,000 vehicles a day, roughly 5% of them trucks, projected to reach 241,189 by 2044. The structure is 32 ft (9.8 m) long and 259 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesInterstate 8
CrossesEl Cajon Creek
Location11-SD-008-15.63-ECJ
RouteInterstate 8
Coordinates32.8029, -116.96554
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
Channel and channel protection9 ExcellentNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length32 ft (9.8 m)
Longest span10 ft (3 m)
Deck width259 ft (78.8 m)
Roadway width221 ft (67.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic189,000 (2014)
Projected traffic241,189 by 2044
Trucks5%
Lanes on structure12
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Interstate 8 over El Cajon Creek built?

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

What condition is Interstate 8 over El Cajon Creek 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 June 2024.

How much traffic does Interstate 8 over El Cajon Creek carry?

About 189,000 vehicles per day (2014 count), of which roughly 5% are trucks.

How long is Interstate 8 over El Cajon Creek?

The structure is 32 ft (9.8 m) long with a longest span of 10 ft (3 m) and a deck 259 ft wide.

Who owns Interstate 8 over El Cajon Creek?

It is owned by the State Highway Agency.