US Bridges

Marsh Road over Roza Power Wasteway

FairPosted for load

Yakima County, Washington · 00.33 W Butterfield · Structure no. 082162000000000

Built
1964
61 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
102 ft
2 main spans
Daily traffic
360
2019 count
Owner
County
County Highway Agency

About this bridge

Marsh Road over Roza Power Wasteway is a steel stringer/multi-beam or girder carrying Marsh Road over Roza Power Wasteway in Yakima County, Washington. It was built in 1964, so it is 61 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. Its operating status is: posted for load restriction.

It carries about 360 vehicles a day, roughly 5% of them trucks, projected to reach 460 by 2039. The structure is 102 ft (31.1 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMarsh Road
CrossesRoza Power Wasteway
Location00.33 W Butterfield
RouteCounty Highway 45300
CountyYakima County
StateWashington
Coordinates46.615, -120.475
Functional classUrban 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating22.5 US tons
Inventory rating17.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length102 ft (31.1 m)
Longest span51 ft (15.5 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic360 (2019)
Projected traffic460 by 2039
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$4 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Marsh Road over Roza Power Wasteway built?

It was built in 1964, making it 61 years old in 2025.

What condition is Marsh Road over Roza Power 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 March 2023.

How much traffic does Marsh Road over Roza Power Wasteway carry?

About 360 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is Marsh Road over Roza Power Wasteway?

The structure is 102 ft (31.1 m) long with a longest span of 51 ft (15.5 m) and a deck 26 ft wide.

Who owns Marsh Road over Roza Power Wasteway?

It is owned by the County Highway Agency.