US Bridges

SR 21 over Bnrr

Good

Adams County, Washington · 0.2 N JCT US 395 · Structure no. 0014489E0000000

Built
1995
30 years old
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
203 ft
2 main spans
Daily traffic
1,021
2023 count
Owner
State
State Highway Agency

About this bridge

SR 21 over Bnrr is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 21 over Bnrr in Adams County, Washington. It was built in 1995, so it is 30 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 1,021 vehicles a day, roughly 21% of them trucks, projected to reach 1,147 by 2039. The structure is 203 ft (61.9 m) long and 43 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesSR 21
CrossesBnrr
Location0.2 N JCT US 395
RouteState Highway 21
Coordinates46.97008, -118.57417
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating95 US tons
Inventory rating57 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length203 ft (61.9 m)
Longest span126 ft (38.4 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,021 (2023)
Projected traffic1,147 by 2039
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

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$4.1 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 21 over Bnrr built?

It was built in 1995, making it 30 years old in 2025.

What condition is SR 21 over Bnrr 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 2024.

How much traffic does SR 21 over Bnrr carry?

About 1,021 vehicles per day (2023 count), of which roughly 21% are trucks.

How long is SR 21 over Bnrr?

The structure is 203 ft (61.9 m) long with a longest span of 126 ft (38.4 m) and a deck 43 ft wide.

Who owns SR 21 over Bnrr?

It is owned by the State Highway Agency.