US Bridges

NB Ramp over N-E Ramp

Good

King County, Washington · 2.7 N Pierce CO · Structure no. 0009236D0000000

Built
1975
50 years old
Condition
Good
inspected February 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
273 ft
3 main spans
Daily traffic
3,951
2023 count
Owner
State
State Highway Agency

About this bridge

NB Ramp over N-E Ramp is a concrete continuous box beam or girders - multiple carrying NB Ramp over N-E Ramp in King County, Washington. It was built in 1975, so it is 50 years old, older 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 3,951 vehicles a day, roughly 5% of them trucks, projected to reach 6,430 by 2039. The structure is 273 ft (83.2 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNB Ramp
CrossesN-E Ramp
Location2.7 N Pierce CO
RouteState Highway 167
CountyKing County
StateWashington
Coordinates47.2995, -122.253
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 inspectionFebruary 2023
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 alignment6: Equal to present minimum criteria
Operating rating91.9 US tons
Inventory rating54 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length273 ft (83.2 m)
Longest span125 ft (38.1 m)
Deck width30 ft (9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,951 (2023)
Projected traffic6,430 by 2039
Trucks5%
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$4 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was NB Ramp over N-E Ramp built?

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

What condition is NB Ramp over N-E 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 February 2023.

How much traffic does NB Ramp over N-E Ramp carry?

About 3,951 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is NB Ramp over N-E Ramp?

The structure is 273 ft (83.2 m) long with a longest span of 125 ft (38.1 m) and a deck 30 ft wide.

Who owns NB Ramp over N-E Ramp?

It is owned by the State Highway Agency.