US Bridges

Interstate 805 SB over Mission Center RD

Fair

San Diego County, California · 11-SD-805-19.19-SD · Structure no. 57 0677L

Built
1972
53 years old, rebuilt 1987
Condition
Fair
inspected September 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
233 ft
3 main spans
Daily traffic
101,500
2022 count
Owner
State
State Highway Agency

About this bridge

Interstate 805 SB over Mission Center RD is a concrete continuous box beam or girders - multiple carrying Interstate 805 SB over Mission Center RD in San Diego County, California. It was built in 1972 and reconstructed in 1987, so it is 53 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 6 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 101,500 vehicles a day, roughly 7% of them trucks, projected to reach 137,823 by 2046. The structure is 233 ft (71 m) long and 80 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesInterstate 805 SB
CrossesMission Center RD
Location11-SD-805-19.19-SD
RouteInterstate 805
Coordinates32.78898, -117.14875
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.3 US tons
Inventory rating42.1 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3 (+3 approach)
Design loadHS 20
Structure length233 ft (71 m)
Longest span98 ft (29.9 m)
Deck width80 ft (24.4 m)
Roadway width76 ft (23.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic101,500 (2022)
Projected traffic137,823 by 2046
Trucks7%
Lanes on structure5
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 805 SB over Mission Center RD built?

It was built in 1972, making it 53 years old in 2025. It was reconstructed in 1987.

What condition is Interstate 805 SB over Mission Center RD 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 September 2024.

How much traffic does Interstate 805 SB over Mission Center RD carry?

About 101,500 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is Interstate 805 SB over Mission Center RD?

The structure is 233 ft (71 m) long with a longest span of 98 ft (29.9 m) and a deck 80 ft wide.

Who owns Interstate 805 SB over Mission Center RD?

It is owned by the State Highway Agency.