US Bridges

N805-MIRA Mesa Off over Bnsf/Soledad Cr/City ST

Fair

San Diego County, California · 11-SD-805-26.75-SD · Structure no. 57 0787S

Built
1972
53 years old
Condition
Fair
inspected October 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
937 ft
8 main spans
Daily traffic
17,900
2020 count
Owner
State
State Highway Agency

About this bridge

N805-MIRA Mesa Off over Bnsf/Soledad Cr/City ST is a concrete continuous box beam or girders - multiple carrying N805-MIRA Mesa Off over Bnsf/Soledad Cr/City ST in San Diego County, California. It was built in 1972, 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 17,900 vehicles a day, roughly 4% of them trucks, projected to reach 30,809 by 2042. The structure is 937 ft (285.6 m) long and 34 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesN805-MIRA Mesa Off
CrossesBnsf/Soledad Cr/City ST
Location11-SD-805-26.75-SD
RouteInterstate 805
CountySan Diego County
StateCalifornia
Coordinates32.88678, -117.20257
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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating34.6 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20 + Mod
Structure length937 ft (285.6 m)
Longest span132 ft (40.2 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,900 (2020)
Projected traffic30,809 by 2042
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway, waterway and railroad
Detour if closed6.2 mi (10 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was N805-MIRA Mesa Off over Bnsf/Soledad Cr/City ST built?

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

What condition is N805-MIRA Mesa Off over Bnsf/Soledad Cr/City ST 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 October 2024.

How much traffic does N805-MIRA Mesa Off over Bnsf/Soledad Cr/City ST carry?

About 17,900 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is N805-MIRA Mesa Off over Bnsf/Soledad Cr/City ST?

The structure is 937 ft (285.6 m) long with a longest span of 132 ft (40.2 m) and a deck 34 ft wide.

Who owns N805-MIRA Mesa Off over Bnsf/Soledad Cr/City ST?

It is owned by the State Highway Agency.