US Bridges

Scoon Road over Roza Canal

Good

Yakima County, Washington · 00.01 S Williamson · Structure no. 084792000000000

Built
1974
51 years old
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
68 ft
1 main span
Daily traffic
740
2023 count
Owner
County
County Highway Agency

About this bridge

Scoon Road over Roza Canal is a prestressed concrete stringer/multi-beam or girder carrying Scoon Road over Roza Canal in Yakima County, Washington. It was built in 1974, so it is 51 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 740 vehicles a day, roughly 5% of them trucks, projected to reach 760 by 2043. The structure is 68 ft (20.7 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesScoon Road
CrossesRoza Canal
Location00.01 S Williamson
RouteCounty Highway 64750
CountyYakima County
StateWashington
Coordinates46.3902, -120.01995
Functional classRural Minor 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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating19.3 US tons
Inventory rating9.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length68 ft (20.7 m)
Longest span66 ft (20.1 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic740 (2023)
Projected traffic760 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$2.8 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Scoon Road over Roza Canal built?

It was built in 1974, making it 51 years old in 2025.

What condition is Scoon Road over Roza Canal 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 2023.

How much traffic does Scoon Road over Roza Canal carry?

About 740 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Scoon Road over Roza Canal?

The structure is 68 ft (20.7 m) long with a longest span of 66 ft (20.1 m) and a deck 32 ft wide.

Who owns Scoon Road over Roza Canal?

It is owned by the County Highway Agency.