Structure 210005108122760 · Yalobusha County, MS

US 51 over Cnic Rr

Carries US 51 over Cnic Rr, 8.4 Mi N Grenada Cl.

Overall conditionFair

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

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

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT171 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

171 ft end to end, longest span 57 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.

Built194086 years old
Length170.9 ft52.1 m
Daily traffic1,000counted 2023
Last inspectedNovember 2023every 24 months

Location

StateMississippi
CountyYalobusha
Location8.4 Mi N Grenada Cl
CarriesUS 51
CrossesCnic Rr
Coordinates34.00910, -89.91142

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length170.9 ft (52.1 m)
Max Span57.1 ft (17.4 m)
Deck Width24.9 ft (7.6 m)
Deck Area396.0 sq m
Main Spans3
Year Built1940

Traffic

Avg Daily Traffic1,000 (2023)
Truck Traffic11%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number210005108122760

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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