US Bridges

Terrace Hts DR over Roza Canal

GoodPosted for load

Yakima County, Washington · 00.07 S Bittner RD · Structure no. 083107000000000

Built
1937
88 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
167 ft
4 main spans
Daily traffic
1,500
2019 count
Owner
County
County Highway Agency

About this bridge

Terrace Hts DR over Roza Canal is a steel stringer/multi-beam or girder carrying Terrace Hts DR over Roza Canal in Yakima County, Washington. It was built in 1937, so it is 88 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. Its operating status is: posted for load restriction.

It carries about 1,500 vehicles a day, roughly 5% of them trucks, projected to reach 2,010 by 2039. The structure is 167 ft (50.9 m) long and 21 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesTerrace Hts DR
CrossesRoza Canal
Location00.07 S Bittner RD
RouteCounty Highway 40500
Coordinates46.59722, -120.41611
Functional classUrban Local

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 protection7 GoodSome minor problems.
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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating24.7 US tons
Inventory rating19 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length167 ft (50.9 m)
Longest span41 ft (12.5 m)
Deck width21 ft (6.5 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,500 (2019)
Projected traffic2,010 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 statusPossibly eligible for the National Register; requires further investigation
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.9 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Terrace Hts DR over Roza Canal built?

It was built in 1937, making it 88 years old in 2025.

What condition is Terrace Hts DR 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 March 2023.

How much traffic does Terrace Hts DR over Roza Canal carry?

About 1,500 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is Terrace Hts DR over Roza Canal?

The structure is 167 ft (50.9 m) long with a longest span of 41 ft (12.5 m) and a deck 21 ft wide.

Who owns Terrace Hts DR over Roza Canal?

It is owned by the County Highway Agency.