US Bridges

Dekker Road over Roza Canal

Good

Yakima County, Washington · 00.04 S Chapelle RD · Structure no. 083329000000000

Built
1971
54 years old
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
75 ft
1 main span
Daily traffic
840
2023 count
Owner
County
County Highway Agency

About this bridge

Dekker Road over Roza Canal is a prestressed concrete stringer/multi-beam or girder carrying Dekker Road over Roza Canal in Yakima County, Washington. It was built in 1971, so it is 54 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 840 vehicles a day, roughly 5% of them trucks, projected to reach 1,100 by 2043. The structure is 75 ft (22.9 m) long and 32 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesDekker Road
CrossesRoza Canal
Location00.04 S Chapelle RD
RouteCounty Highway 66370
Coordinates46.41083, -120.12542
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 rating21.4 US tons
Inventory rating13.6 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadH 20
Structure length75 ft (22.9 m)
Longest span74 ft (22.6 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic840 (2023)
Projected traffic1,100 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$3.1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Dekker Road over Roza Canal built?

It was built in 1971, making it 54 years old in 2025.

What condition is Dekker 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 Dekker Road over Roza Canal carry?

About 840 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Dekker Road over Roza Canal?

The structure is 75 ft (22.9 m) long with a longest span of 74 ft (22.6 m) and a deck 32 ft wide.

Who owns Dekker Road over Roza Canal?

It is owned by the County Highway Agency.