US Bridges

Interstate 5 NB over Interstate 805

Good

San Diego County, California · 11-SD-005-R30.64R-SD · Structure no. 57 0512R

Built
1966
59 years old, rebuilt 2007
Condition
Good
inspected February 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
498 ft
2 main spans
Daily traffic
74,000
2020 count
Owner
State
State Highway Agency

About this bridge

Interstate 5 NB over Interstate 805 is a prestressed concrete continuous box beam or girders - multiple carrying Interstate 5 NB over Interstate 805 in San Diego County, California. It was built in 1966 and reconstructed in 2007, so it is 59 years old, older 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 74,000 vehicles a day, roughly 4% of them trucks, projected to reach 111,797 by 2047. The structure is 498 ft (151.8 m) long and 119 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesInterstate 5 NB
CrossesInterstate 805
Location11-SD-005-R30.64R-SD
RouteInterstate 5
Coordinates32.90332, -117.2235
Functional classUrban Principal Arterial - Interstate

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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2025
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 geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating86.4 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20 + Mod
Structure length498 ft (151.8 m)
Longest span165 ft (50.3 m)
Deck width119 ft (36.2 m)
Roadway width114 ft (34.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic74,000 (2020)
Projected traffic111,797 by 2047
Trucks4%
Lanes on structure6
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed5 mi (8 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 Interstate 5 NB over Interstate 805 built?

It was built in 1966, making it 59 years old in 2025. It was reconstructed in 2007.

What condition is Interstate 5 NB over Interstate 805 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 February 2025.

How much traffic does Interstate 5 NB over Interstate 805 carry?

About 74,000 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is Interstate 5 NB over Interstate 805?

The structure is 498 ft (151.8 m) long with a longest span of 165 ft (50.3 m) and a deck 119 ft wide.

Who owns Interstate 5 NB over Interstate 805?

It is owned by the State Highway Agency.