Structure 18I00400001 · Cumberland County, TN

I40 over SR 24

Carries I40 over SR 24, Putnam-cumberland Co.ln..

Overall conditionPoor

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

How ratings work
Decksets the rating4/9 · Poor
Superstructure5/9 · Fair
Substructure5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT304 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 5/9Substructure 5/9

304 ft end to end, longest span 74 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.

Built1963rebuilt 1980
Length304.1 ft92.7 m
Daily traffic36,293counted 2021
Last inspectedOctober 2023every 24 months

Location

StateTennessee
CountyCumberland
LocationPutnam-cumberland Co.ln.
CarriesI40
CrossesSR 24
Coordinates36.09979, -85.23631

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length304.1 ft (92.7 m)
Max Span74.1 ft (22.6 m)
Deck Width44.0 ft (13.4 m)
Deck Area1242.2 sq m
Main Spans5
Year Built1963 (reconstructed 1980)

Traffic

Avg Daily Traffic36,293 (2021)
Truck Traffic7%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number18I00400001

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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