US Bridges

Spring ST SB over Interstate 8

Fair

San Diego County, California · 11-SD-008-10.97-LMSA · Structure no. 57 0404

Built
1962
63 years old
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
254 ft
3 main spans
Daily traffic
39,100
2014 count
Owner
State
State Highway Agency

About this bridge

Spring ST SB over Interstate 8 is a concrete continuous box beam or girders - multiple carrying Spring ST SB over Interstate 8 in San Diego County, California. It was built in 1962, so it is 63 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 39,100 vehicles a day, roughly 1% of them trucks, projected to reach 46,214 by 2041. The structure is 254 ft (77.4 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSpring ST SB
CrossesInterstate 8
Location11-SD-008-10.97-LMSA
RouteCity Street 0S157
CountySan Diego County
StateCalifornia
Coordinates32.77138, -117.02407
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating53.9 US tons
Inventory rating41.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length254 ft (77.4 m)
Longest span85 ft (25.9 m)
Deck width28 ft (8.6 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic39,100 (2014)
Projected traffic46,214 by 2041
Trucks1%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 Spring ST SB over Interstate 8 built?

It was built in 1962, making it 63 years old in 2025.

What condition is Spring ST SB over Interstate 8 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2024.

How much traffic does Spring ST SB over Interstate 8 carry?

About 39,100 vehicles per day (2014 count), of which roughly 1% are trucks.

How long is Spring ST SB over Interstate 8?

The structure is 254 ft (77.4 m) long with a longest span of 85 ft (25.9 m) and a deck 28 ft wide.

Who owns Spring ST SB over Interstate 8?

It is owned by the State Highway Agency.