US Bridges

Mission Road over Route 15

Good

San Diego County, California · 11-SD-015-R50.53 · Structure no. 57 0897

Built
1983
42 years old
Condition
Good
inspected June 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
292 ft
2 main spans
Daily traffic
550
2020 count
Owner
State
State Highway Agency

About this bridge

Mission Road over Route 15 is a prestressed concrete continuous box beam or girders - multiple carrying Mission Road over Route 15 in San Diego County, California. It was built in 1983, so it is 42 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 550 vehicles a day, roughly 4% of them trucks, projected to reach 1,028 by 2045. The structure is 292 ft (89 m) long and 57 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesMission Road
CrossesRoute 15
Location11-SD-015-R50.53
RouteCounty Highway 0
Coordinates33.38709, -117.17514
Functional classRural Major Collector

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 geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.3 US tons
Inventory rating42.5 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length292 ft (89 m)
Longest span144 ft (43.9 m)
Deck width57 ft (17.5 m)
Roadway width54 ft (16.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic550 (2020)
Projected traffic1,028 by 2045
Trucks4%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

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 Mission Road over Route 15 built?

It was built in 1983, making it 42 years old in 2025.

What condition is Mission Road over Route 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 June 2024.

How much traffic does Mission Road over Route 15 carry?

About 550 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is Mission Road over Route 15?

The structure is 292 ft (89 m) long with a longest span of 144 ft (43.9 m) and a deck 57 ft wide.

Who owns Mission Road over Route 15?

It is owned by the State Highway Agency.