US Bridges

I 59 over Little Black Creek

Good

Lamar County, Mississippi · 6.4 MI N SR 13 · Structure no. 11000590370475B

Built
1961
64 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
310 ft
1 main span
Daily traffic
8,000
2023 count
Owner
State
State Highway Agency

About this bridge

I 59 over Little Black Creek is a prestressed concrete stringer/multi-beam or girder carrying I 59 over Little Black Creek in Lamar County, Mississippi. It was built in 1961, so it is 64 years old, older 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 8,000 vehicles a day, roughly 32% of them trucks, projected to reach 9,000 by 2043. The structure is 310 ft (94.5 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI 59
CrossesLittle Black Creek
Location6.4 MI N SR 13
RouteInterstate 59
Coordinates31.08929, -89.38254
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 inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.8 US tons
Inventory rating47.2 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+6 approach)
Design loadHS 20 + Mod
Structure length310 ft (94.5 m)
Longest span70 ft (21.3 m)
Deck width45 ft (13.7 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,000 (2023)
Projected traffic9,000 by 2043
Trucks32%
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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$456 million
NavigationNo navigation control on waterway

Frequently asked questions

When was I 59 over Little Black Creek built?

It was built in 1961, making it 64 years old in 2025.

What condition is I 59 over Little Black Creek 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 59 over Little Black Creek carry?

About 8,000 vehicles per day (2023 count), of which roughly 32% are trucks.

How long is I 59 over Little Black Creek?

The structure is 310 ft (94.5 m) long with a longest span of 70 ft (21.3 m) and a deck 45 ft wide.

Who owns I 59 over Little Black Creek?

It is owned by the State Highway Agency.