US Bridges

Interstate 5 NB over N5-HARBOR DR Off-Ramp

Fair

San Diego County, California · 11-SD-005-R10.68-NATC · Structure no. 57 0467R

Built
1964
61 years old
Condition
Fair
inspected April 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
158 ft
3 main spans
Daily traffic
82,000
2020 count
Owner
State
State Highway Agency

About this bridge

Interstate 5 NB over N5-HARBOR DR Off-Ramp is a concrete continuous box beam or girders - multiple carrying Interstate 5 NB over N5-HARBOR DR Off-Ramp in San Diego County, California. It was built in 1964, so it is 61 years old, older 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 82,000 vehicles a day, roughly 5% of them trucks, projected to reach 117,466 by 2040. The structure is 158 ft (48.2 m) long and 70 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesInterstate 5 NB
CrossesN5-HARBOR DR Off-Ramp
Location11-SD-005-R10.68-NATC
RouteInterstate 5
Coordinates32.66823, -117.11098
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating45.3 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length158 ft (48.2 m)
Longest span62 ft (18.9 m)
Deck width70 ft (21.3 m)
Roadway width66 ft (20.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic82,000 (2020)
Projected traffic117,466 by 2040
Trucks5%
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 NetworkNon-Interstate 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 5 NB over N5-HARBOR DR Off-Ramp built?

It was built in 1964, making it 61 years old in 2025.

What condition is Interstate 5 NB over N5-HARBOR DR Off-Ramp 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 April 2023.

How much traffic does Interstate 5 NB over N5-HARBOR DR Off-Ramp carry?

About 82,000 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Interstate 5 NB over N5-HARBOR DR Off-Ramp?

The structure is 158 ft (48.2 m) long with a longest span of 62 ft (18.9 m) and a deck 70 ft wide.

Who owns Interstate 5 NB over N5-HARBOR DR Off-Ramp?

It is owned by the State Highway Agency.