US Bridges

Interstate 15 NB over Valley Parkway

Fair

San Diego County, California · 11-SD-015-R30.63-ESD · Structure no. 57 0809R

Built
1977
48 years old, rebuilt 2011
Condition
Fair
inspected March 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
207 ft
2 main spans
Daily traffic
90,500
2018 count
Owner
State
State Highway Agency

About this bridge

Interstate 15 NB over Valley Parkway is a concrete continuous box beam or girders - multiple carrying Interstate 15 NB over Valley Parkway in San Diego County, California. It was built in 1977 and reconstructed in 2011, so it is 48 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 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 90,500 vehicles a day, roughly 7% of them trucks, projected to reach 100,000 by 2042. The structure is 207 ft (63.1 m) long and 108 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesInterstate 15 NB
CrossesValley Parkway
Location11-SD-015-R30.63-ESD
RouteInterstate 15
CountySan Diego County
StateCalifornia
Coordinates33.11537, -117.09856
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment9: Superior to present desirable criteria
Operating rating103.6 US tons
Inventory rating62.5 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length207 ft (63.1 m)
Longest span107 ft (32.7 m)
Deck width108 ft (32.9 m)
Roadway width105 ft (31.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic90,500 (2018)
Projected traffic100,000 by 2042
Trucks7%
Lanes on structure8
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
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 15 NB over Valley Parkway built?

It was built in 1977, making it 48 years old in 2025. It was reconstructed in 2011.

What condition is Interstate 15 NB over Valley Parkway 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 March 2024.

How much traffic does Interstate 15 NB over Valley Parkway carry?

About 90,500 vehicles per day (2018 count), of which roughly 7% are trucks.

How long is Interstate 15 NB over Valley Parkway?

The structure is 207 ft (63.1 m) long with a longest span of 107 ft (32.7 m) and a deck 108 ft wide.

Who owns Interstate 15 NB over Valley Parkway?

It is owned by the State Highway Agency.