US Bridges

I 59 over Mixons Creek

Good

Lamar County, Mississippi · Lamar/Forrest Cl · Structure no. 110005903706620

Built
1960
65 years old
Condition
Good
inspected December 2024
Type
Culvert
Concrete
Length
39 ft
2 main spans
Daily traffic
49,000
2023 count
Owner
State
State Highway Agency

About this bridge

I 59 over Mixons Creek is a concrete culvert carrying I 59 over Mixons Creek in Lamar 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 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 49,000 vehicles a day, roughly 19% of them trucks, projected to reach 62,000 by 2043. The structure is 39 ft (11.9 m) long. If it were closed, the detour would be 6.2 mi (10 km).

CarriesI 59
CrossesMixons Creek
LocationLamar/Forrest Cl
RouteInterstate 59
Coordinates31.3464, -89.35199
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length39 ft (11.9 m)
Longest span18 ft (5.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic49,000 (2023)
Projected traffic62,000 by 2043
Trucks19%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$376 million
NavigationNo navigation control on waterway

Frequently asked questions

When was I 59 over Mixons Creek built?

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

What condition is I 59 over Mixons 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 December 2024.

How much traffic does I 59 over Mixons Creek carry?

About 49,000 vehicles per day (2023 count), of which roughly 19% are trucks.

How long is I 59 over Mixons Creek?

The structure is 39 ft (11.9 m) long with a longest span of 18 ft (5.5 m).

Who owns I 59 over Mixons Creek?

It is owned by the State Highway Agency.