US Bridges

Indian Church Rd. over Slough

GoodPosted for load

Yakima County, Washington · 00.07 N SR 223 · Structure no. 083801000000000

Built
1954
71 years old
Condition
Good
inspected February 2023
Type
Slab
Concrete Continuous
Length
82 ft
4 main spans
Daily traffic
40
2023 count
Owner
County
County Highway Agency

About this bridge

Indian Church Rd. over Slough is a concrete continuous slab carrying Indian Church Rd. over Slough in Yakima County, Washington. It was built in 1954, so it is 71 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 40 vehicles a day, roughly 5% of them trucks, projected to reach 45 by 2043. The structure is 82 ft (25 m) long and 26 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesIndian Church Rd.
CrossesSlough
Location00.07 N SR 223
RouteCounty Highway 70310
Coordinates46.33184, -120.1998
Functional classRural 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 protection8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating14.3 US tons
Inventory rating11 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length82 ft (25 m)
Longest span20 ft (6.1 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2023)
Projected traffic45 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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$3.3 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Indian Church Rd. over Slough built?

It was built in 1954, making it 71 years old in 2025.

What condition is Indian Church Rd. over Slough 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 Indian Church Rd. over Slough carry?

About 40 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Indian Church Rd. over Slough?

The structure is 82 ft (25 m) long with a longest span of 20 ft (6.1 m) and a deck 26 ft wide.

Who owns Indian Church Rd. over Slough?

It is owned by the County Highway Agency.