US Bridges

SR 821 over Roza Canal

Good

Yakima County, Washington · 0.1 N JCT SR 823 · Structure no. 0008560B0000000

Built
1969
56 years old
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
96 ft
1 main span
Daily traffic
3,895
2023 count
Owner
State
State Highway Agency

About this bridge

SR 821 over Roza Canal is a prestressed concrete stringer/multi-beam or girder carrying SR 821 over Roza Canal in Yakima County, Washington. It was built in 1969, so it is 56 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 3,895 vehicles a day, roughly 11% of them trucks, projected to reach 4,965 by 2039. The structure is 96 ft (29.3 m) long and 41 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesSR 821
CrossesRoza Canal
Location0.1 N JCT SR 823
RouteState Highway 821
CountyYakima County
StateWashington
Coordinates46.68222, -120.4805
Functional classUrban Minor Arterial

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 evaluation7: Better than present minimum criteria
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 rating69 US tons
Inventory rating41 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length96 ft (29.3 m)
Longest span91 ft (27.7 m)
Deck width41 ft (12.6 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,895 (2023)
Projected traffic4,965 by 2039
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.8 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 821 over Roza Canal built?

It was built in 1969, making it 56 years old in 2025.

What condition is SR 821 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 SR 821 over Roza Canal carry?

About 3,895 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is SR 821 over Roza Canal?

The structure is 96 ft (29.3 m) long with a longest span of 91 ft (27.7 m) and a deck 41 ft wide.

Who owns SR 821 over Roza Canal?

It is owned by the State Highway Agency.