Structure 73I00400035 · Roane County, TN

Nfa 2366 (sa 7314) over I40

Carries Nfa 2366 (sa 7314) over I40, 1.5 M W Of Loudon Co Line.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT305 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 8/9

305 ft end to end, longest span 172 ft: about 4 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 multi-beam bridge.

Built200818 years old
Length305.1 ft93 m
Daily traffic80counted 2021
Last inspectedSeptember 2024every 24 months

Location

StateTennessee
CountyRoane
Location1.5 M W Of Loudon Co Line
CarriesNfa 2366 (sa 7314)
CrossesI40
Coordinates35.87831, -84.36053

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length305.1 ft (93 m)
Max Span171.9 ft (52.4 m)
Deck Width98.1 ft (29.9 m)
Deck Area2780.7 sq m
Main Spans2
Year Built2008

Traffic

Avg Daily Traffic80 (2021)
Truck Traffic3%
Lanes On Bridge4
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 Number73I00400035

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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