Structure 11000550430442A · Lincoln County, MS

I 55 over Rocky Bluff Road

Carries I 55 over Rocky Bluff Road, 6.6 Mi N US 84.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure8/9 · Very Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT155 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 8/9Substructure 7/9

155 ft end to end, longest span 51 ft: about 2 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 multi-beam bridge.

Built196660 years old
Length154.9 ft47.2 m
Daily traffic10,500counted 2023
Last inspectedFebruary 2025every 24 months

Location

StateMississippi
CountyLincoln
Location6.6 Mi N US 84
CarriesI 55
CrossesRocky Bluff Road
Coordinates31.63693, -90.45738

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length154.9 ft (47.2 m)
Max Span50.9 ft (15.5 m)
Deck Width41.0 ft (12.5 m)
Deck Area590 sq m
Main Spans3
Year Built1966

Traffic

Avg Daily Traffic10,500 (2023)
Truck Traffic30%
Lanes On Bridge20
Lanes Under Bridge2

Inspection & Ownership

Last InspectionFebruary 2025
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number11000550430442A

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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