Structure SA1800000000101 · Forrest County, MS

Sims Ranch RD over Leaf River Relief

Carries Sims Ranch RD over Leaf River Relief, Sec 32 T 4n R12w B.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT399 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

399 ft end to end, longest span 21 ft: about 6 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 channel-beam bridge.

Built196759 years old
Length399.0 ft121.6 m
Daily traffic2,840counted 2024
Last inspectedSeptember 2024every 12 months

Location

StateMississippi
CountyForrest
LocationSec 32 T 4n R12w B
CarriesSims Ranch RD
CrossesLeaf River Relief
Coordinates31.26384, -89.21623

Physical Characteristics

MaterialConcrete
DesignChannel Beam
Total Length399.0 ft (121.6 m)
Max Span21.0 ft (6.4 m)
Deck Width27.9 ft (8.5 m)
Deck Area1033.6 sq m
Main Spans21
Year Built1967

Traffic

Avg Daily Traffic2,840 (2024)
Truck Traffic12%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure NumberSA1800000000101

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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