US Bridges

State Highway 170 over I 49-WASHINGTON Co.

Fair

Washington County, Arkansas · 1.4 MI W of 71 JCT · Structure no. 000000000006238

Built
1994
31 years old
Condition
Fair
inspected December 2021
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
373 ft
4 main spans
Daily traffic
4,143
2018 count
Owner
State
State Highway Agency

About this bridge

State Highway 170 over I 49-WASHINGTON Co. is a steel continuous stringer/multi-beam or girder carrying State Highway 170 over I 49-WASHINGTON Co. in Washington County, Arkansas. It was built in 1994, so it is 31 years old, younger than the Arkansas average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 4,143 vehicles a day, roughly 3% of them trucks, projected to reach 6,892 by 2028. The structure is 373 ft (113.7 m) long and 43 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesState Highway 170
CrossesI 49-WASHINGTON Co.
Location1.4 MI W of 71 JCT
RouteState Highway 170
CountyWashington County
StateArkansas
Coordinates35.92448, -94.19911
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length373 ft (113.7 m)
Longest span140 ft (42.7 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,143 (2018)
Projected traffic6,892 by 2028
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was State Highway 170 over I 49-WASHINGTON Co. built?

It was built in 1994, making it 31 years old in 2025.

What condition is State Highway 170 over I 49-WASHINGTON Co. in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in December 2021.

How much traffic does State Highway 170 over I 49-WASHINGTON Co. carry?

About 4,143 vehicles per day (2018 count), of which roughly 3% are trucks.

How long is State Highway 170 over I 49-WASHINGTON Co.?

The structure is 373 ft (113.7 m) long with a longest span of 140 ft (42.7 m) and a deck 43 ft wide.

Who owns State Highway 170 over I 49-WASHINGTON Co.?

It is owned by the State Highway Agency.