US Bridges

I-5 NB Off Ramp over I-5 NB on Ramp

Good

Clark County, Washington · 0.8 N JCT SR14 · Structure no. 0011193E0000000

Built
1979
46 years old
Condition
Good
inspected April 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
459 ft
3 main spans
Daily traffic
6,976
2023 count
Owner
State
State Highway Agency

About this bridge

I-5 NB Off Ramp over I-5 NB on Ramp is a prestressed concrete continuous box beam or girders - multiple carrying I-5 NB Off Ramp over I-5 NB on Ramp in Clark County, Washington. It was built in 1979, so it is 46 years old, younger than the Washington average of 49.8 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 6,976 vehicles a day, roughly 12% of them trucks, projected to reach 10,935 by 2039. The structure is 459 ft (139.9 m) long and 29 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-5 NB Off Ramp
CrossesI-5 NB on Ramp
Location0.8 N JCT SR14
RouteInterstate 5
CountyClark County
StateWashington
Coordinates45.63242, -122.66378
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.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.3 US tons
Inventory rating37.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length459 ft (139.9 m)
Longest span201 ft (61.3 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,976 (2023)
Projected traffic10,935 by 2039
Trucks12%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$6.1 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-5 NB Off Ramp over I-5 NB on Ramp built?

It was built in 1979, making it 46 years old in 2025.

What condition is I-5 NB Off Ramp over I-5 NB on Ramp 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 April 2024.

How much traffic does I-5 NB Off Ramp over I-5 NB on Ramp carry?

About 6,976 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is I-5 NB Off Ramp over I-5 NB on Ramp?

The structure is 459 ft (139.9 m) long with a longest span of 201 ft (61.3 m) and a deck 29 ft wide.

Who owns I-5 NB Off Ramp over I-5 NB on Ramp?

It is owned by the State Highway Agency.