US Bridges

Nfa 1837 (sa 4123) over Leatherwood Creek

Fair

Hickman County, Tennessee · 3 M North of Shady Grove · Structure no. 41S61760007

Built
1968
57 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
105 ft
3 main spans
Daily traffic
233
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1837 (sa 4123) over Leatherwood Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying Nfa 1837 (sa 4123) over Leatherwood Creek in Hickman County, Tennessee. It was built in 1968, so it is 57 years old, older than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 233 vehicles a day, roughly 3% of them trucks, projected to reach 373 by 2042. The structure is 105 ft (32 m) long and 33 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesNfa 1837 (sa 4123)
CrossesLeatherwood Creek
Location3 M North of Shady Grove
RouteCounty Highway 1837
CountyHickman County
StateTennessee
Coordinates35.75936, -87.25785
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating98.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length105 ft (32 m)
Longest span35 ft (10.7 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic233 (2021)
Projected traffic373 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1837 (sa 4123) over Leatherwood Creek built?

It was built in 1968, making it 57 years old in 2025.

What condition is Nfa 1837 (sa 4123) over Leatherwood Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2023.

How much traffic does Nfa 1837 (sa 4123) over Leatherwood Creek carry?

About 233 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1837 (sa 4123) over Leatherwood Creek?

The structure is 105 ft (32 m) long with a longest span of 35 ft (10.7 m) and a deck 33 ft wide.

Who owns Nfa 1837 (sa 4123) over Leatherwood Creek?

It is owned by the County Highway Agency.