Structure SA2500000000056 · Hinds County, MS

Siwell RD over Pearl River

Carries Siwell RD over Pearl River, Sec 19 T 4n R 1e B.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 4 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating4/9 · Poor
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,580 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 4/9 · sets the rating

1,580 ft end to end, longest span 140 ft: about 4.4 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.

Built198937 years old
Length1580.1 ft481.6 m
Daily traffic7,300counted 2024
Last inspectedOctober 2023every 24 months

Location

StateMississippi
CountyHinds
LocationSec 19 T 4n R 1e B
CarriesSiwell RD
CrossesPearl River
Coordinates32.17768, -90.24276

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length1580.1 ft (481.6 m)
Max Span140.1 ft (42.7 m)
Deck Width33.1 ft (10.1 m)
Deck Area4864.2 sq m
Main Spans3
Year Built1989

Traffic

Avg Daily Traffic7,300 (2024)
Truck Traffic8%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure NumberSA2500000000056

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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