Structure 310000605405040 · Panola County, MS

US 278 over SR 35 & Cnic Rr

Carries US 278 over SR 35 & Cnic Rr, 0.9 Mi W US 51.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT370 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 5/9 · sets the ratingSubstructure 6/9

370 ft end to end: about 5 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.

Built193987 years old
Length370.1 ft112.8 m
Daily traffic12,000counted 2023
Last inspectedOctober 2024every 24 months

Location

StateMississippi
CountyPanola
Location0.9 Mi W US 51
CarriesUS 278
CrossesSR 35 & Cnic Rr
Coordinates34.30929, -89.95928

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length370.1 ft (112.8 m)
Max Span49.9 ft (15.2 m)
Deck Width26.9 ft (8.2 m)
Deck Area925.0 sq m
Main Spans1
Year Built1939

Traffic

Avg Daily Traffic12,000 (2023)
Truck Traffic7%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number310000605405040

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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