US Bridges

I 55 over State Line Road

Good

DeSoto County, Mississippi · 0.2 MI S Tenn ST Line · Structure no. 110005501729210

Built
2007
18 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
328 ft
3 main spans
Daily traffic
76,000
2023 count
Owner
State
State Highway Agency

About this bridge

I 55 over State Line Road is a steel continuous stringer/multi-beam or girder carrying I 55 over State Line Road in DeSoto County, Mississippi. It was built in 2007, so it is 18 years old, younger than the Mississippi average of 38.9 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 76,000 vehicles a day, roughly 13% of them trucks, projected to reach 100,000 by 2043. The structure is 328 ft (99.9 m) long and 149 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI 55
CrossesState Line Road
Location0.2 MI S Tenn ST Line
RouteInterstate 55
Coordinates34.99142, -90.00217
Functional classUrban 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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating60.6 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length328 ft (99.9 m)
Longest span157 ft (47.8 m)
Deck width149 ft (45.4 m)
Roadway width144 ft (43.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic76,000 (2023)
Projected traffic100,000 by 2043
Trucks13%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 55 over State Line Road built?

It was built in 2007, making it 18 years old in 2025.

What condition is I 55 over State Line Road 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 June 2023.

How much traffic does I 55 over State Line Road carry?

About 76,000 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is I 55 over State Line Road?

The structure is 328 ft (99.9 m) long with a longest span of 157 ft (47.8 m) and a deck 149 ft wide.

Who owns I 55 over State Line Road?

It is owned by the State Highway Agency.