Structure 11000550250951B · Hinds County, MS

I 55 over High Street

Carries I 55 over High Street, 1.9 Mi N Jct I 55 I 20.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT287 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

287 ft end to end, longest span 51 ft: about 4 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.

Built196759 years old
Length287.1 ft87.5 m
Daily traffic48,500counted 2023
Last inspectedJune 2024every 24 months

Location

StateMississippi
CountyHinds
Location1.9 Mi N Jct I 55 I 20
CarriesI 55
CrossesHigh Street
Coordinates32.30246, -90.16639

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length287.1 ft (87.5 m)
Max Span50.9 ft (15.5 m)
Deck Width59.4 ft (18.1 m)
Deck Area1583.8 sq m
Main Spans4
Year Built1967

Traffic

Avg Daily Traffic48,500 (2023)
Truck Traffic8%
Lanes On Bridge4
Lanes Under Bridge2

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number11000550250951B

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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