Structure 11000550261550A · Holmes County, MS

I 55 over SR 12

Carries I 55 over SR 12, I 55 Over SR 12.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT626 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 7/9

626 ft end to end, longest span 76 ft: about 1.7 football fields. 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.

Built197155 years old
Length626.0 ft190.8 m
Daily traffic7,500counted 2023
Last inspectedJune 2024every 24 months

Location

StateMississippi
CountyHolmes
LocationI 55 Over SR 12
CarriesI 55
CrossesSR 12
Coordinates33.09869, -89.89542

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length626.0 ft (190.8 m)
Max Span76.1 ft (23.2 m)
Deck Width51.8 ft (15.8 m)
Deck Area3014.6 sq m
Main Spans3
Year Built1971

Traffic

Avg Daily Traffic7,500 (2023)
Truck Traffic34%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number11000550261550A

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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