US Bridges

W-Ne over Northup Creek

Good

Grant County, Washington · 0.1S Gr Coulee Hill RD · Structure no. 086531000000000

Built
1985
40 years old
Condition
Good
inspected October 2023
Type
Culvert
Steel
Length
43 ft
4 main spans
Daily traffic
56
2020 count
Owner
County
County Highway Agency

About this bridge

W-Ne over Northup Creek is a steel culvert carrying W-Ne over Northup Creek in Grant County, Washington. It was built in 1985, so it is 40 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 56 vehicles a day, roughly 29% of them trucks, projected to reach 120 by 2043. The structure is 43 ft (13.1 m) long and 36 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesW-Ne
CrossesNorthup Creek
Location0.1S Gr Coulee Hill RD
RouteCounty Highway 95037
Coordinates47.87468, -118.99515
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2023
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 alignment8: Equal to present desirable criteria
Operating rating106.8 US tons
Inventory rating97.9 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans4
Design loadUnknown
Structure length43 ft (13.1 m)
Longest span8 ft (2.4 m)
Deck width36 ft (11 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic56 (2020)
Projected traffic120 by 2043
Trucks29%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$735,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was W-Ne over Northup Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is W-Ne over Northup Creek 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 October 2023.

How much traffic does W-Ne over Northup Creek carry?

About 56 vehicles per day (2020 count), of which roughly 29% are trucks.

How long is W-Ne over Northup Creek?

The structure is 43 ft (13.1 m) long with a longest span of 8 ft (2.4 m) and a deck 36 ft wide.

Who owns W-Ne over Northup Creek?

It is owned by the County Highway Agency.