US Bridges

Interstate 805 SB over San Ysidro Blvd

Fair

San Diego County, California · 11-SD-805-0.65-SD · Structure no. 57 0776L

Built
1975
50 years old
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
168 ft
1 main span
Daily traffic
26,000
2022 count
Owner
State
State Highway Agency

About this bridge

Interstate 805 SB over San Ysidro Blvd is a prestressed concrete box beam or girders - multiple carrying Interstate 805 SB over San Ysidro Blvd in San Diego County, California. It was built in 1975, so it is 50 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 5 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 26,000 vehicles a day, roughly 4% of them trucks, projected to reach 41,500 by 2046. The structure is 168 ft (51.2 m) long and 68 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesInterstate 805 SB
CrossesSan Ysidro Blvd
Location11-SD-805-0.65-SD
RouteInterstate 805
Coordinates32.552, -117.04128
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating80.7 US tons
Inventory rating51 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length168 ft (51.2 m)
Longest span165 ft (50.3 m)
Deck width68 ft (20.8 m)
Roadway width65 ft (19.9 m)
Vertical clearance over deck19 ft (5.9 m)

Traffic and service

Average daily traffic26,000 (2022)
Projected traffic41,500 by 2046
Trucks4%
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 805 SB over San Ysidro Blvd built?

It was built in 1975, making it 50 years old in 2025.

What condition is Interstate 805 SB over San Ysidro Blvd 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 May 2024.

How much traffic does Interstate 805 SB over San Ysidro Blvd carry?

About 26,000 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is Interstate 805 SB over San Ysidro Blvd?

The structure is 168 ft (51.2 m) long with a longest span of 165 ft (50.3 m) and a deck 68 ft wide.

Who owns Interstate 805 SB over San Ysidro Blvd?

It is owned by the State Highway Agency.