US Bridges

I-49 Nbln Benton 1 over US 71-SEC 18B

Fair

Benton County, Arkansas · 10.14 MI N Wash CO Line · Structure no. 000000000007405

Built
2019
6 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
239 ft
1 main span
Daily traffic
76,000
2019 count
Owner
State
State Highway Agency

About this bridge

I-49 Nbln Benton 1 over US 71-SEC 18B is a steel continuous stringer/multi-beam or girder carrying I-49 Nbln Benton 1 over US 71-SEC 18B in Benton County, Arkansas. It was built in 2019, so it is 6 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 76,000 vehicles a day, roughly 1% of them trucks, projected to reach 99,000 by 2039. The structure is 239 ft (72.8 m) long and 48 ft wide.

Location

Open in Google Maps
CarriesI-49 Nbln Benton 1
CrossesUS 71-SEC 18B
Location10.14 MI N Wash CO Line
RouteInterstate 49
CountyBenton County
StateArkansas
Coordinates36.33479, -94.1834
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
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 spans1
Design loadHL 93
Structure length239 ft (72.8 m)
Longest span237 ft (72.2 m)
Deck width48 ft (14.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic76,000 (2019)
Projected traffic99,000 by 2039
Trucks1%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I-49 Nbln Benton 1 over US 71-SEC 18B built?

It was built in 2019, making it 6 years old in 2025.

What condition is I-49 Nbln Benton 1 over US 71-SEC 18B 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 May 2023.

How much traffic does I-49 Nbln Benton 1 over US 71-SEC 18B carry?

About 76,000 vehicles per day (2019 count), of which roughly 1% are trucks.

How long is I-49 Nbln Benton 1 over US 71-SEC 18B?

The structure is 239 ft (72.8 m) long with a longest span of 237 ft (72.2 m) and a deck 48 ft wide.

Who owns I-49 Nbln Benton 1 over US 71-SEC 18B?

It is owned by the State Highway Agency.