US Bridges

Ocr 3683 over Nespelem River

Good

Okanogan County, Washington · 5.1 MI N. SR 155 · Structure no. 089299000000000

Built
2022
3 years old
Condition
Good
inspected September 2023
Type
Slab
Prestressed Concrete
Length
71 ft
1 main span
Daily traffic
51
2019 count
Owner
County
County Highway Agency

About this bridge

Ocr 3683 over Nespelem River is a prestressed concrete slab carrying Ocr 3683 over Nespelem River in Okanogan County, Washington. It was built in 2022, so it is 3 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 51 vehicles a day, roughly 16% of them trucks, projected to reach 60 by 2040. The structure is 71 ft (21.6 m) long and 32 ft wide. If it were closed, the detour would be 13 mi (21 km).

CarriesOcr 3683
CrossesNespelem River
Location5.1 MI N. SR 155
RouteCounty Highway 36830
Coordinates48.24917, -118.975
Functional classRural Local

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.3 US tons
Inventory rating51 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHL 93
Structure length71 ft (21.6 m)
Longest span68 ft (20.7 m)
Deck width32 ft (9.8 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic51 (2019)
Projected traffic60 by 2040
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Ocr 3683 over Nespelem River built?

It was built in 2022, making it 3 years old in 2025.

What condition is Ocr 3683 over Nespelem River 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 September 2023.

How much traffic does Ocr 3683 over Nespelem River carry?

About 51 vehicles per day (2019 count), of which roughly 16% are trucks.

How long is Ocr 3683 over Nespelem River?

The structure is 71 ft (21.6 m) long with a longest span of 68 ft (20.7 m) and a deck 32 ft wide.

Who owns Ocr 3683 over Nespelem River?

It is owned by the County Highway Agency.