US Bridges

Interstate 8 over Los Coches Creek

Good

San Diego County, California · 11-SD-008-R21.51 · Structure no. 57 0593

Built
1964
61 years old
Condition
Good
inspected June 2022
Type
Culvert
Concrete
Length
62 ft
5 main spans
Daily traffic
70,000
2014 count
Owner
State
State Highway Agency

About this bridge

Interstate 8 over Los Coches Creek is a concrete culvert carrying Interstate 8 over Los Coches Creek in San Diego County, California. It was built in 1964, so it is 61 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 70,000 vehicles a day, roughly 7% of them trucks, projected to reach 86,139 by 2039. The structure is 62 ft (18.9 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesInterstate 8
CrossesLos Coches Creek
Location11-SD-008-R21.51
RouteInterstate 8
Coordinates32.84173, -116.88588
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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionJune 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy9: Superior 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 spans5
Design loadHS 20
Structure length62 ft (18.9 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic70,000 (2014)
Projected traffic86,139 by 2039
Trucks7%
Lanes on structure4
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 Los Coches Creek built?

It was built in 1964, making it 61 years old in 2025.

What condition is Interstate 8 over Los Coches 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 2022.

How much traffic does Interstate 8 over Los Coches Creek carry?

About 70,000 vehicles per day (2014 count), of which roughly 7% are trucks.

How long is Interstate 8 over Los Coches Creek?

The structure is 62 ft (18.9 m) long with a longest span of 8 ft (2.4 m).

Who owns Interstate 8 over Los Coches Creek?

It is owned by the State Highway Agency.