US Bridges

11.5 RD NW over Wasteway

Fair

Grant County, Washington · 11.5 NW 0.1 W of H NW · Structure no. 080060000000000

Built
1953
72 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
26 ft
1 main span
Daily traffic
63
2021 count
Owner
County
County Highway Agency

About this bridge

11.5 RD NW over Wasteway is a wood or timber stringer/multi-beam or girder carrying 11.5 RD NW over Wasteway in Grant County, Washington. It was built in 1953, so it is 72 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 63 vehicles a day, roughly 30% of them trucks, projected to reach 145 by 2043. The structure is 26 ft (7.9 m) long and 25 ft wide. If it were closed, the detour would be 5 mi (8 km).

Carries11.5 RD NW
CrossesWasteway
Location11.5 NW 0.1 W of H NW
RouteCounty Highway 36900
Coordinates47.26043, -119.66136
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating48 US tons
Inventory rating34 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadH 15
Structure length26 ft (7.9 m)
Longest span25 ft (7.6 m)
Deck width25 ft (7.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic63 (2021)
Projected traffic145 by 2043
Trucks30%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 with deck rehabilitation or replacement
Estimated improvement cost$321,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 11.5 RD NW over Wasteway built?

It was built in 1953, making it 72 years old in 2025.

What condition is 11.5 RD NW over Wasteway 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 February 2024.

How much traffic does 11.5 RD NW over Wasteway carry?

About 63 vehicles per day (2021 count), of which roughly 30% are trucks.

How long is 11.5 RD NW over Wasteway?

The structure is 26 ft (7.9 m) long with a longest span of 25 ft (7.6 m) and a deck 25 ft wide.

Who owns 11.5 RD NW over Wasteway?

It is owned by the County Highway Agency.