Structure 17001100240008A · Harrison County, MS

I 110 Off Ramp over Percy Street

Carries I 110 Off Ramp over Percy Street, 0.8 Mi N US 90.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructuresets the rating8/9 · Very Good
Substructuresets the rating8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT740 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

740 ft end to end, longest span 140 ft: about 2.1 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 segmental box-girder bridge.

Built198838 years old
Length740.2 ft225.6 m
Daily traffic3,500counted 2023
Last inspectedDecember 2023every 24 months

Location

StateMississippi
CountyHarrison
Location0.8 Mi N US 90
CarriesI 110 Off Ramp
CrossesPercy Street
Coordinates30.40665, -88.89454

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignSegmental Box Girder
Total Length740.2 ft (225.6 m)
Max Span140.1 ft (42.7 m)
Deck Width28.9 ft (8.8 m)
Deck Area1985.3 sq m
Main Spans6
Year Built1988

Traffic

Avg Daily Traffic3,500 (2023)
Truck Traffic18%
Lanes On Bridge1
Lanes Under Bridge2

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number17001100240008A

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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