US Bridges

SR 823 over Slough and SR 823 Ramp

Good

Yakima County, Washington · 0.2 N JCT I-82 · Structure no. 0015137G0000000

Built
1998
27 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
187 ft
2 main spans
Daily traffic
15,105
2023 count
Owner
State
State Highway Agency

About this bridge

SR 823 over Slough and SR 823 Ramp is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 823 over Slough and SR 823 Ramp in Yakima County, Washington. It was built in 1998, so it is 27 years old, younger 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 15,105 vehicles a day, roughly 5% of them trucks, projected to reach 23,933 by 2039. The structure is 187 ft (57 m) long and 48 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesSR 823
CrossesSlough and SR 823 Ramp
Location0.2 N JCT I-82
RouteState Highway 823
CountyYakima County
StateWashington
Coordinates46.63715, -120.52747
Functional classUrban Other Principal 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 inspectionOctober 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 rating76.9 US tons
Inventory rating46 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length187 ft (57 m)
Longest span101 ft (30.8 m)
Deck width48 ft (14.6 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,105 (2023)
Projected traffic23,933 by 2039
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesHighway and waterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$3.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 823 over Slough and SR 823 Ramp built?

It was built in 1998, making it 27 years old in 2025.

What condition is SR 823 over Slough and SR 823 Ramp 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 October 2023.

How much traffic does SR 823 over Slough and SR 823 Ramp carry?

About 15,105 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is SR 823 over Slough and SR 823 Ramp?

The structure is 187 ft (57 m) long with a longest span of 101 ft (30.8 m) and a deck 48 ft wide.

Who owns SR 823 over Slough and SR 823 Ramp?

It is owned by the State Highway Agency.