US Bridges

I-49 over CR 21

Good

Benton County, Arkansas · 1.6 Miles S of Mo State L · Structure no. 0000000000A7219

Built
2020
5 years old
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
329 ft
3 main spans
Daily traffic
22,000
2021 count
Owner
State
State Highway Agency

About this bridge

I-49 over CR 21 is a steel continuous stringer/multi-beam or girder carrying I-49 over CR 21 in Benton County, Arkansas. It was built in 2020, so it is 5 years old, younger than the Arkansas average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 22,000 vehicles a day, roughly 20% of them trucks, projected to reach 25,000 by 2040. The structure is 329 ft (100.3 m) long and 44 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesI-49
CrossesCR 21
Location1.6 Miles S of Mo State L
RouteInterstate 49
CountyBenton County
StateArkansas
Coordinates36.47783, -94.37729
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length329 ft (100.3 m)
Longest span124 ft (37.8 m)
Deck width44 ft (13.4 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic22,000 (2021)
Projected traffic25,000 by 2040
Trucks20%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.2 mi (10 km)
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 over CR 21 built?

It was built in 2020, making it 5 years old in 2025.

What condition is I-49 over CR 21 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 I-49 over CR 21 carry?

About 22,000 vehicles per day (2021 count), of which roughly 20% are trucks.

How long is I-49 over CR 21?

The structure is 329 ft (100.3 m) long with a longest span of 124 ft (37.8 m) and a deck 44 ft wide.

Who owns I-49 over CR 21?

It is owned by the State Highway Agency.