US Bridges

I 55 over SR 6

Fair

Panola County, Mississippi · I 55 over SR 6 · Structure no. 11000550542433A

Built
1960
65 years old
Condition
Fair
inspected February 2024
Type
Box Beam or Girders - Single or Spread
Concrete Continuous
Length
229 ft
2 main spans
Daily traffic
9,500
2023 count
Owner
State
State Highway Agency

About this bridge

I 55 over SR 6 is a concrete continuous box beam or girders - single or spread carrying I 55 over SR 6 in Panola County, Mississippi. It was built in 1960, so it is 65 years old, older than the Mississippi average of 38.9 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 9,500 vehicles a day, roughly 29% of them trucks, projected to reach 13,500 by 2043. The structure is 229 ft (69.8 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI 55
CrossesSR 6
LocationI 55 over SR 6
RouteInterstate 55
Coordinates34.31022, -89.91947
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.3 US tons
Inventory rating34.9 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20 + Mod
Structure length229 ft (69.8 m)
Longest span67 ft (20.4 m)
Deck width40 ft (12.1 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,500 (2023)
Projected traffic13,500 by 2043
Trucks29%
Lanes on structure3
Traffic directionOne-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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$237 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 55 over SR 6 built?

It was built in 1960, making it 65 years old in 2025.

What condition is I 55 over SR 6 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 February 2024.

How much traffic does I 55 over SR 6 carry?

About 9,500 vehicles per day (2023 count), of which roughly 29% are trucks.

How long is I 55 over SR 6?

The structure is 229 ft (69.8 m) long with a longest span of 67 ft (20.4 m) and a deck 40 ft wide.

Who owns I 55 over SR 6?

It is owned by the State Highway Agency.