US Bridges

State Route 125 NB over Interstate 8 & Ramps

Fair

San Diego County, California · 11-SD-125-R15.35-LMSA · Structure no. 57 0950R

Built
1990
35 years old
Condition
Fair
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
541 ft
4 main spans
Daily traffic
79,500
2020 count
Owner
State
State Highway Agency

About this bridge

State Route 125 NB over Interstate 8 & Ramps is a prestressed concrete continuous box beam or girders - multiple carrying State Route 125 NB over Interstate 8 & Ramps in San Diego County, California. It was built in 1990, so it is 35 years old, younger 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 6 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 79,500 vehicles a day, projected to reach 103,899 by 2042. The structure is 541 ft (164.9 m) long and 70 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesState Route 125 NB
CrossesInterstate 8 & Ramps
Location11-SD-125-R15.35-LMSA
RouteState Highway 125
CountySan Diego County
StateCalifornia
Coordinates32.77699, -117.00319
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length541 ft (164.9 m)
Longest span171 ft (52.1 m)
Deck width70 ft (21.2 m)
Roadway width66 ft (20.2 m)
Vertical clearance over deck19 ft (5.6 m)

Traffic and service

Average daily traffic79,500 (2020)
Projected traffic103,899 by 2042
Trucks0%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 State Route 125 NB over Interstate 8 & Ramps built?

It was built in 1990, making it 35 years old in 2025.

What condition is State Route 125 NB over Interstate 8 & Ramps 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 August 2024.

How much traffic does State Route 125 NB over Interstate 8 & Ramps carry?

About 79,500 vehicles per day (2020 count).

How long is State Route 125 NB over Interstate 8 & Ramps?

The structure is 541 ft (164.9 m) long with a longest span of 171 ft (52.1 m) and a deck 70 ft wide.

Who owns State Route 125 NB over Interstate 8 & Ramps?

It is owned by the State Highway Agency.