US Bridges

Nfa 1856 (sa 4122) over Dog Creek

Fair

Hickman County, Tennessee · 2 M SE of Primm Springs · Structure no. 41018560009

Built
1984
41 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete Continuous
Length
52 ft
2 main spans
Daily traffic
166
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1856 (sa 4122) over Dog Creek is a concrete continuous culvert carrying Nfa 1856 (sa 4122) over Dog Creek in Hickman County, Tennessee. It was built in 1984, so it is 41 years old, younger 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 166 vehicles a day, roughly 3% of them trucks, projected to reach 254 by 2041. The structure is 52 ft (15.8 m) long and 26 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesNfa 1856 (sa 4122)
CrossesDog Creek
Location2 M SE of Primm Springs
RouteCounty Highway 1856
CountyHickman County
StateTennessee
Coordinates35.80552, -87.2285
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length52 ft (15.8 m)
Longest span12 ft (3.7 m)
Deck width26 ft (7.8 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic166 (2021)
Projected traffic254 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$118,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1856 (sa 4122) over Dog Creek built?

It was built in 1984, making it 41 years old in 2025.

What condition is Nfa 1856 (sa 4122) over Dog 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 August 2023.

How much traffic does Nfa 1856 (sa 4122) over Dog Creek carry?

About 166 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1856 (sa 4122) over Dog Creek?

The structure is 52 ft (15.8 m) long with a longest span of 12 ft (3.7 m) and a deck 26 ft wide.

Who owns Nfa 1856 (sa 4122) over Dog Creek?

It is owned by the County Highway Agency.