US Bridges

I-5 N-W Ramp over 14th Ave SE

Good

Thurston County, Washington · 1.2 N JCT US 101 · Structure no. 0012835B0000000

Built
1986
39 years old
Condition
Good
inspected December 2021
Type
Box Beam or Girders - Multiple
Concrete
Length
176 ft
3 main spans
Daily traffic
3,671
2023 count
Owner
State
State Highway Agency

About this bridge

I-5 N-W Ramp over 14th Ave SE is a concrete box beam or girders - multiple carrying I-5 N-W Ramp over 14th Ave SE in Thurston County, Washington. It was built in 1986, so it is 39 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 3,671 vehicles a day, roughly 2% of them trucks, projected to reach 5,595 by 2039. The structure is 176 ft (53.6 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesI-5 N-W Ramp
Crosses14th Ave SE
Location1.2 N JCT US 101
RouteInterstate 5
CountyThurston County
StateWashington
Coordinates47.03164, -122.89064
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 inspectionDecember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating99 US tons
Inventory rating99 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length176 ft (53.6 m)
Longest span70 ft (21.3 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,671 (2023)
Projected traffic5,595 by 2039
Trucks2%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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$2.1 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-5 N-W Ramp over 14th Ave SE built?

It was built in 1986, making it 39 years old in 2025.

What condition is I-5 N-W Ramp over 14th Ave SE 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 December 2021.

How much traffic does I-5 N-W Ramp over 14th Ave SE carry?

About 3,671 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is I-5 N-W Ramp over 14th Ave SE?

The structure is 176 ft (53.6 m) long with a longest span of 70 ft (21.3 m) and a deck 31 ft wide.

Who owns I-5 N-W Ramp over 14th Ave SE?

It is owned by the State Highway Agency.