Structure 74I00240007 · Robertson County, TN

Fas 256 over I24

Carries Fas 256 over I24, 4 Mi.sw Of Turnersville.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT371 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9Substructure 5/9 · sets the rating

371 ft end to end, longest span 137 ft: about 5 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.

Built197056 years old
Length371.1 ft113.1 m
Daily traffic4,823counted 2021
Last inspectedMarch 2024every 24 months

Location

StateTennessee
CountyRobertson
Location4 Mi.sw Of Turnersville
CarriesFas 256
CrossesI24
Coordinates36.44979, -87.09972

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length371.1 ft (113.1 m)
Max Span137.1 ft (41.8 m)
Deck Width45.9 ft (14 m)
Deck Area1583.4 sq m
Main Spans3
Year Built1970

Traffic

Avg Daily Traffic4,823 (2021)
Truck Traffic5%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number74I00240007

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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