US Bridges

Derrick Road over Interstate 8

Good

Imperial County, California · 11-IMP-008-R28.94 · Structure no. 58 0244

Built
1968
57 years old
Condition
Good
inspected February 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
178 ft
2 main spans
Daily traffic
220
2019 count
Owner
State
State Highway Agency

About this bridge

Derrick Road over Interstate 8 is a concrete continuous box beam or girders - multiple carrying Derrick Road over Interstate 8 in Imperial County, California. It was built in 1968, so it is 57 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 220 vehicles a day, roughly 2% of them trucks, projected to reach 652 by 2045. The structure is 178 ft (54.3 m) long and 34 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesDerrick Road
CrossesInterstate 8
Location11-IMP-008-R28.94
RouteCounty Highway 0
CountyImperial County
StateCalifornia
Coordinates32.77401, -115.70741
Functional classRural Minor Collector

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 inspectionFebruary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.4 US tons
Inventory rating38.9 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length178 ft (54.3 m)
Longest span89 ft (27.1 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic220 (2019)
Projected traffic652 by 2045
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

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 Derrick Road over Interstate 8 built?

It was built in 1968, making it 57 years old in 2025.

What condition is Derrick Road over Interstate 8 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 February 2023.

How much traffic does Derrick Road over Interstate 8 carry?

About 220 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is Derrick Road over Interstate 8?

The structure is 178 ft (54.3 m) long with a longest span of 89 ft (27.1 m) and a deck 34 ft wide.

Who owns Derrick Road over Interstate 8?

It is owned by the State Highway Agency.