US Bridges

SR 26 over Nedwickes Arroyo

Good

Adams County, Washington · 1.5 E JCT SR 21 · Structure no. 002000540000000

Built
1960
65 years old
Condition
Good
inspected October 2024
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
1,356
2023 count
Owner
State
State Highway Agency

About this bridge

SR 26 over Nedwickes Arroyo is a concrete continuous culvert carrying SR 26 over Nedwickes Arroyo in Adams County, Washington. It was built in 1960, so it is 65 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 1,356 vehicles a day, roughly 16% of them trucks, projected to reach 1,678 by 2039. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 14.3 mi (23 km).

CarriesSR 26
CrossesNedwickes Arroyo
Location1.5 E JCT SR 21
RouteState Highway 26
Coordinates46.79536, -118.51581
Functional classRural Principal Arterial - Other

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 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.8 US tons
Inventory rating28.5 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,356 (2023)
Projected traffic1,678 by 2039
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$428,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 26 over Nedwickes Arroyo built?

It was built in 1960, making it 65 years old in 2025.

What condition is SR 26 over Nedwickes Arroyo 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 2024.

How much traffic does SR 26 over Nedwickes Arroyo carry?

About 1,356 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is SR 26 over Nedwickes Arroyo?

The structure is 22 ft (6.7 m) long with a longest span of 11 ft (3.4 m).

Who owns SR 26 over Nedwickes Arroyo?

It is owned by the State Highway Agency.