US Bridges

Interstate 8 WB over Mountain Springs RD

Good

Imperial County, California · 11-IMP-008-R3.05L · Structure no. 58 0296L

Built
1963
62 years old
Condition
Good
inspected May 2024
Type
Tee Beam
Concrete Continuous
Length
115 ft
3 main spans
Daily traffic
7,105
2018 count
Owner
State
State Highway Agency

About this bridge

Interstate 8 WB over Mountain Springs RD is a concrete continuous tee beam carrying Interstate 8 WB over Mountain Springs RD in Imperial County, California. It was built in 1963, so it is 62 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 7,105 vehicles a day, roughly 20% of them trucks, projected to reach 12,837 by 2041. The structure is 115 ft (35.1 m) long and 42 ft wide.

CarriesInterstate 8 WB
CrossesMountain Springs RD
Location11-IMP-008-R3.05L
RouteInterstate 8
Coordinates32.67862, -116.09911
Functional classRural 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 geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.2 US tons
Inventory rating33.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length115 ft (35.1 m)
Longest span52 ft (15.8 m)
Deck width42 ft (12.9 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,105 (2018)
Projected traffic12,837 by 2041
Trucks20%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 8 WB over Mountain Springs RD built?

It was built in 1963, making it 62 years old in 2025.

What condition is Interstate 8 WB over Mountain Springs RD 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 8 WB over Mountain Springs RD carry?

About 7,105 vehicles per day (2018 count), of which roughly 20% are trucks.

How long is Interstate 8 WB over Mountain Springs RD?

The structure is 115 ft (35.1 m) long with a longest span of 52 ft (15.8 m) and a deck 42 ft wide.

Who owns Interstate 8 WB over Mountain Springs RD?

It is owned by the State Highway Agency.