Structure 79S80740025 · Shelby County, TN

Nfa K641 over Loosahatchie River

Carries Nfa K641 over Loosahatchie River, Collierville-arlington RD.

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 overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT583 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 4/9 · sets the rating

583 ft end to end, longest span 85 ft: about 1.6 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.

Built1960rebuilt 1996
Length583.0 ft177.7 m
Daily traffic3,132counted 2021
Last inspectedMay 2023every 24 months

Location

StateTennessee
CountyShelby
LocationCollierville-arlington RD
CarriesNfa K641
CrossesLoosahatchie River
Coordinates35.30642, -89.66758

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length583.0 ft (177.7 m)
Max Span85.0 ft (25.9 m)
Deck Width30.8 ft (9.4 m)
Deck Area1670.4 sq m
Main Spans3
Year Built1960 (reconstructed 1996)

Traffic

Avg Daily Traffic3,132 (2021)
Truck Traffic13%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical3 — Scour critical
Structure Number79S80740025

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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