Structure 5570270P0000000 · Jefferson County, MS

Natchez Trace Park over Ms Route 552

Carries Natchez Trace Park over Ms Route 552, 7.2 Miles South Of U.s. R.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT205 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

205 ft end to end, longest span 94 ft: about 3 semi-trucks nose to tail. Lengths and the semi-truck 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 box-beam bridge.

Built197848 years old
Length204.7 ft62.4 m
Daily traffic200counted 2024
Last inspectedApril 2024every 24 months

Location

StateMississippi
CountyJefferson
Location7.2 Miles South Of U.s. R
CarriesNatchez Trace Park
CrossesMs Route 552
Coordinates31.84375, -91.05708

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignBox Beam - Single/Spread
Total Length204.7 ft (62.4 m)
Max Span94.2 ft (28.7 m)
Deck Width33.1 ft (10.1 m)
Deck Area630.2 sq m
Main Spans3
Year Built1978

Traffic

Avg Daily Traffic200 (2024)
Truck Traffic7%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerNational Park Service
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number5570270P0000000

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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