US Bridges

I 55 over Gallman Road

Fair

Copiah County, Mississippi · 6.5 MI S SR 27 · Structure no. 11000550150644B

Built
1963
62 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
162 ft
3 main spans
Daily traffic
13,000
2023 count
Owner
State
State Highway Agency

About this bridge

I 55 over Gallman Road is a prestressed concrete stringer/multi-beam or girder carrying I 55 over Gallman Road in Copiah County, Mississippi. It was built in 1963, so it is 62 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 5 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 13,000 vehicles a day, roughly 24% of them trucks, projected to reach 13,000 by 2043. The structure is 162 ft (49.4 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 55
CrossesGallman Road
Location6.5 MI S SR 27
RouteInterstate 55
CountyCopiah County
StateMississippi
Coordinates31.9257, -90.40177
Functional classRural 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 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 rating84.4 US tons
Inventory rating46 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length162 ft (49.4 m)
Longest span67 ft (20.4 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,000 (2023)
Projected traffic13,000 by 2043
Trucks24%
Lanes on structure2
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 with deck rehabilitation or replacement
Estimated improvement cost$329 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 55 over Gallman Road built?

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

What condition is I 55 over Gallman Road 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 August 2023.

How much traffic does I 55 over Gallman Road carry?

About 13,000 vehicles per day (2023 count), of which roughly 24% are trucks.

How long is I 55 over Gallman Road?

The structure is 162 ft (49.4 m) long with a longest span of 67 ft (20.4 m) and a deck 31 ft wide.

Who owns I 55 over Gallman Road?

It is owned by the State Highway Agency.