US Bridges

NB FAIRMOUNT-W8 on over Fairmount Ave

Fair

San Diego County, California · 11-SD-008-6.28-SD · Structure no. 57 0347K

Built
1958
67 years old, rebuilt 1968
Condition
Fair
inspected April 2024
Type
Slab
Concrete Continuous
Length
162 ft
4 main spans
Daily traffic
29,000
2014 count
Owner
State
State Highway Agency

About this bridge

NB FAIRMOUNT-W8 on over Fairmount Ave is a concrete continuous slab carrying NB FAIRMOUNT-W8 on over Fairmount Ave in San Diego County, California. It was built in 1958 and reconstructed in 1968, so it is 67 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 29,000 vehicles a day, roughly 2% of them trucks, projected to reach 36,426 by 2042. The structure is 162 ft (49.4 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNB FAIRMOUNT-W8 on
CrossesFairmount Ave
Location11-SD-008-6.28-SD
RouteInterstate 8
CountySan Diego County
StateCalifornia
Coordinates32.77967, -117.10174
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionApril 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating65.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length162 ft (49.4 m)
Longest span46 ft (14 m)
Deck width34 ft (10.3 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,000 (2014)
Projected traffic36,426 by 2042
Trucks2%
Lanes on structure2
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 NB FAIRMOUNT-W8 on over Fairmount Ave built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1968.

What condition is NB FAIRMOUNT-W8 on over Fairmount Ave 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 April 2024.

How much traffic does NB FAIRMOUNT-W8 on over Fairmount Ave carry?

About 29,000 vehicles per day (2014 count), of which roughly 2% are trucks.

How long is NB FAIRMOUNT-W8 on over Fairmount Ave?

The structure is 162 ft (49.4 m) long with a longest span of 46 ft (14 m) and a deck 34 ft wide.

Who owns NB FAIRMOUNT-W8 on over Fairmount Ave?

It is owned by the State Highway Agency.