US Bridges

Brownstown Rd. N. over Canal - Main Extension

FairPosted for load

Yakima County, Washington · 00.70 N West Wapato · Structure no. 080595000000000

Built
1958
67 years old
Condition
Fair
inspected January 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
24 ft
1 main span
Daily traffic
113
2023 count
Owner
County
County Highway Agency

About this bridge

Brownstown Rd. N. over Canal - Main Extension is a wood or timber stringer/multi-beam or girder carrying Brownstown Rd. N. over Canal - Main Extension in Yakima County, Washington. It was built in 1958, so it is 67 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 113 vehicles a day, roughly 5% of them trucks, projected to reach 185 by 2043. The structure is 24 ft (7.3 m) long and 21 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesBrownstown Rd. N.
CrossesCanal - Main Extension
Location00.70 N West Wapato
RouteCounty Highway 54450
Coordinates46.45833, -120.605
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating20.4 US tons
Inventory rating15.8 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadH 20
Structure length24 ft (7.3 m)
Longest span23 ft (7 m)
Deck width21 ft (6.4 m)
Roadway width21 ft (6.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic113 (2023)
Projected traffic185 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Brownstown Rd. N. over Canal - Main Extension built?

It was built in 1958, making it 67 years old in 2025.

What condition is Brownstown Rd. N. over Canal - Main Extension 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 January 2023.

How much traffic does Brownstown Rd. N. over Canal - Main Extension carry?

About 113 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Brownstown Rd. N. over Canal - Main Extension?

The structure is 24 ft (7.3 m) long with a longest span of 23 ft (7 m) and a deck 21 ft wide.

Who owns Brownstown Rd. N. over Canal - Main Extension?

It is owned by the County Highway Agency.