US Bridges

I-55SB-12-LM 71.64 over Pemiscot Bayou

GoodPosted for load

Mississippi County, Arkansas · .34 No JCT SH 150 · Structure no. 0000000000A3169

Built
1963
62 years old
Condition
Good
inspected April 2024
Type
Slab
Concrete
Length
150 ft
5 main spans
Daily traffic
11,500
2018 count
Owner
State
State Highway Agency

About this bridge

I-55SB-12-LM 71.64 over Pemiscot Bayou is a concrete slab carrying I-55SB-12-LM 71.64 over Pemiscot Bayou in Mississippi County, Arkansas. It was built in 1963, so it is 62 years old, older 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 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 11,500 vehicles a day, roughly 48% of them trucks, projected to reach 14,250 by 2034. The structure is 150 ft (45.7 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-55SB-12-LM 71.64
CrossesPemiscot Bayou
Location.34 No JCT SH 150
RouteInterstate 55
CountyMississippi County
StateArkansas
Coordinates35.99132, -89.87487
Functional classRural Principal Arterial - Interstate

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41 US tons
Inventory rating24 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length150 ft (45.7 m)
Longest span30 ft (9.1 m)
Deck width44 ft (13.3 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,500 (2018)
Projected traffic14,250 by 2034
Trucks48%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-55SB-12-LM 71.64 over Pemiscot Bayou built?

It was built in 1963, making it 62 years old in 2025.

What condition is I-55SB-12-LM 71.64 over Pemiscot Bayou 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 April 2024.

How much traffic does I-55SB-12-LM 71.64 over Pemiscot Bayou carry?

About 11,500 vehicles per day (2018 count), of which roughly 48% are trucks.

How long is I-55SB-12-LM 71.64 over Pemiscot Bayou?

The structure is 150 ft (45.7 m) long with a longest span of 30 ft (9.1 m) and a deck 44 ft wide.

Who owns I-55SB-12-LM 71.64 over Pemiscot Bayou?

It is owned by the State Highway Agency.