Structure 23I01550019 · Dyer County, TN

Nfa A658 over Mcclough RD / I155

Carries Nfa A658 over Mcclough RD / I155, 2.7 Mi E Jct I155&sr182.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT250 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

250 ft end to end, longest span 130 ft: about 3 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 box-beam bridge.

Built197947 years old
Length250.0 ft76.2 m
Daily traffic320counted 2020
Last inspectedOctober 2023every 24 months

Location

StateTennessee
CountyDyer
Location2.7 Mi E Jct I155&sr182
CarriesNfa A658
CrossesMcclough RD / I155
Coordinates36.06981, -89.45084

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Single/Spread
Total Length250.0 ft (76.2 m)
Max Span129.9 ft (39.6 m)
Deck Width32.2 ft (9.8 m)
Deck Area746.8 sq m
Main Spans2
Year Built1979

Traffic

Avg Daily Traffic320 (2020)
Truck Traffic4%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number23I01550019

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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