Structure 42SR0490009 · Houston County, TN

Fap 49 over Salmon Creek

Carries Fap 49 over Salmon Creek, 7.1 Mi.southeast Of Erin.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT78 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

78 ft end to end, longest span 39 ft. Lengths and the car 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.

Built1932rebuilt 2000
Length78.1 ft23.8 m
Daily traffic1,900counted 2021
Last inspectedDecember 2023every 24 months

Location

StateTennessee
CountyHouston
Location7.1 Mi.southeast Of Erin
CarriesFap 49
CrossesSalmon Creek
Coordinates36.26640, -87.56222

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length78.1 ft (23.8 m)
Max Span39.0 ft (11.9 m)
Deck Width34.1 ft (10.4 m)
Deck Area247.5 sq m
Main Spans2
Year Built1932 (reconstructed 2000)

Traffic

Avg Daily Traffic1,900 (2021)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number42SR0490009

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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