Structure 11000100300515B · Jackson County, MS

I 10 over SR 609

Carries I 10 over SR 609, I 10 Over SR 609.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT300 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 7/9 · sets the ratingSubstructure 8/9

300 ft end to end, longest span 80 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.

Built1970rebuilt 2011
Length299.9 ft91.4 m
Daily traffic39,500counted 2023
Last inspectedNovember 2023every 24 months

Location

StateMississippi
CountyJackson
LocationI 10 Over SR 609
CarriesI 10
CrossesSR 609
Coordinates30.45405, -88.84334

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length299.9 ft (91.4 m)
Max Span80.1 ft (24.4 m)
Deck Width62.0 ft (18.9 m)
Deck Area1727.5 sq m
Main Spans2
Year Built1970 (reconstructed 2011)

Traffic

Avg Daily Traffic39,500 (2023)
Truck Traffic15%
Lanes On Bridge3
Lanes Under Bridge4

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 Number11000100300515B

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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