Structure 5570146P0000000 · Hinds County, MS

Natchez Trace Park over Williams Airport Road

Carries Natchez Trace Park over Williams Airport Road, 4.9 Miles From I-20.

Overall conditionFair

Set by its lowest-rated component: Substructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT89 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

89 ft end to end, longest span 34 ft. Lengths and the car on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a slab bridge.

Built196759 years old
Length88.9 ft27.1 m
Daily traffic1,130counted 2022
Last inspectedFebruary 2025every 24 months

Location

StateMississippi
CountyHinds
Location4.9 Miles From I-20
CarriesNatchez Trace Park
CrossesWilliams Airport Road
Coordinates32.29247, -90.40738

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length88.9 ft (27.1 m)
Max Span34.1 ft (10.4 m)
Deck Width32.2 ft (9.8 m)
Deck Area265.6 sq m
Main Spans3
Year Built1967

Traffic

Avg Daily Traffic1,130 (2022)
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionFebruary 2025
Inspection FrequencyEvery 24 months
OwnerNational Park Service
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number5570146P0000000

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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