US Bridges

I 59 over US 49

Fair

Forrest County, Mississippi · I 59 over US 49 · Structure no. 11000590180668B

Built
1960
65 years old
Condition
Fair
inspected December 2024
Type
Box Beam or Girders - Single or Spread
Concrete Continuous
Length
229 ft
2 main spans
Daily traffic
24,500
2023 count
Owner
State
State Highway Agency

About this bridge

I 59 over US 49 is a concrete continuous box beam or girders - single or spread carrying I 59 over US 49 in Forrest 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 24,500 vehicles a day, roughly 31% of them trucks, projected to reach 31,000 by 2043. The structure is 229 ft (69.8 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI 59
CrossesUS 49
LocationI 59 over US 49
RouteInterstate 59
Coordinates31.3565, -89.34659
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 inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating42.1 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 width43 ft (13 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,500 (2023)
Projected traffic31,000 by 2043
Trucks31%
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$370 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 59 over US 49 built?

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

What condition is I 59 over US 49 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 December 2024.

How much traffic does I 59 over US 49 carry?

About 24,500 vehicles per day (2023 count), of which roughly 31% are trucks.

How long is I 59 over US 49?

The structure is 229 ft (69.8 m) long with a longest span of 67 ft (20.4 m) and a deck 43 ft wide.

Who owns I 59 over US 49?

It is owned by the State Highway Agency.