Structure 310002905603500 · Perry County, MS

SR 29 over Leaf River

Carries SR 29 over Leaf River, 1.7 Mi N US 98.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,232 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

1,232 ft end to end, longest span 130 ft: about 3.4 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.

Built197056 years old
Length1232.0 ft375.5 m
Daily traffic3,300counted 2023
Last inspectedJune 2024every 24 months

Location

StateMississippi
CountyPerry
Location1.7 Mi N US 98
CarriesSR 29
CrossesLeaf River
Coordinates31.21987, -89.05137

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length1232.0 ft (375.5 m)
Max Span129.9 ft (39.6 m)
Deck Width36.1 ft (11 m)
Deck Area4130.5 sq m
Main Spans3
Year Built1970

Traffic

Avg Daily Traffic3,300 (2023)
Truck Traffic31%
Lanes On Bridge2
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 Critical7 — Countermeasures installed
Structure Number310002905603500

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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