US Bridges

Interstate 15 NB over Lawrence Welk Drive

Good

San Diego County, California · 11-SD-015-R39.35 · Structure no. 57 0894R

Built
1980
45 years old
Condition
Good
inspected June 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
105 ft
1 main span
Daily traffic
70,000
2020 count
Owner
State
State Highway Agency

About this bridge

Interstate 15 NB over Lawrence Welk Drive is a prestressed concrete box beam or girders - multiple carrying Interstate 15 NB over Lawrence Welk Drive in San Diego County, California. It was built in 1980, so it is 45 years old, younger 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 70,000 vehicles a day, roughly 13% of them trucks, projected to reach 107,500 by 2045. The structure is 105 ft (32 m) long and 69 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesInterstate 15 NB
CrossesLawrence Welk Drive
Location11-SD-015-R39.35
RouteInterstate 15
Coordinates33.23218, -117.1466
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 inspectionJune 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 rating69.7 US tons
Inventory rating40.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length105 ft (32 m)
Longest span104 ft (31.7 m)
Deck width69 ft (21 m)
Roadway width65 ft (19.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic70,000 (2020)
Projected traffic107,500 by 2045
Trucks13%
Lanes on structure4
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 Lawrence Welk Drive built?

It was built in 1980, making it 45 years old in 2025.

What condition is Interstate 15 NB over Lawrence Welk Drive 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 June 2024.

How much traffic does Interstate 15 NB over Lawrence Welk Drive carry?

About 70,000 vehicles per day (2020 count), of which roughly 13% are trucks.

How long is Interstate 15 NB over Lawrence Welk Drive?

The structure is 105 ft (32 m) long with a longest span of 104 ft (31.7 m) and a deck 69 ft wide.

Who owns Interstate 15 NB over Lawrence Welk Drive?

It is owned by the State Highway Agency.