Structure 73I00400023 · Roane County, TN

I40 RT LN over SR 58

Carries I40 RT LN over SR 58, 1.3 M NE Jct Sr1&sr326.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT167 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 5/9 · sets the rating

167 ft end to end, longest span 43 ft: about 2 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 tee-beam bridge.

Built196957 years old
Length167.0 ft50.9 m
Daily traffic51,799counted 2021
Last inspectedSeptember 2024every 24 months

Location

StateTennessee
CountyRoane
Location1.3 M NE Jct Sr1&sr326
CarriesI40 RT LN
CrossesSR 58
Coordinates35.87140, -84.44425

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length167.0 ft (50.9 m)
Max Span43.0 ft (13.1 m)
Deck Width46.6 ft (14.2 m)
Deck Area722.8 sq m
Main Spans4
Year Built1969

Traffic

Avg Daily Traffic51,799 (2021)
Truck Traffic6%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number73I00400023

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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