US Bridges

State Route 163 over Interstate 15

Good

San Diego County, California · 11-SD-163-R11.13-SD · Structure no. 57 0903R

Built
1982
43 years old
Condition
Good
inspected January 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
444 ft
2 main spans
Daily traffic
62,500
2016 count
Owner
State
State Highway Agency

About this bridge

State Route 163 over Interstate 15 is a prestressed concrete continuous box beam or girders - multiple carrying State Route 163 over Interstate 15 in San Diego County, California. It was built in 1982, so it is 43 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 62,500 vehicles a day, roughly 3% of them trucks, projected to reach 97,374 by 2043. The structure is 444 ft (135.4 m) long and 81 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesState Route 163
CrossesInterstate 15
Location11-SD-163-R11.13-SD
RouteState Highway 163
Coordinates32.85654, -117.11465
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 inspectionJanuary 2023
Inspection intervalevery 48 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 rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length444 ft (135.4 m)
Longest span243 ft (74.1 m)
Deck width81 ft (24.6 m)
Roadway width77 ft (23.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic62,500 (2016)
Projected traffic97,374 by 2043
Trucks3%
Lanes on structure5
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 163 over Interstate 15 built?

It was built in 1982, making it 43 years old in 2025.

What condition is State Route 163 over Interstate 15 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 January 2023.

How much traffic does State Route 163 over Interstate 15 carry?

About 62,500 vehicles per day (2016 count), of which roughly 3% are trucks.

How long is State Route 163 over Interstate 15?

The structure is 444 ft (135.4 m) long with a longest span of 243 ft (74.1 m) and a deck 81 ft wide.

Who owns State Route 163 over Interstate 15?

It is owned by the State Highway Agency.