US Bridges

Nfa 1715 (sa 4015) over Nelson Creek

Fair

Henry County, Tennessee · 4 Mi. S. of SR140 · Structure no. 40017150007

Built
1965
60 years old
Condition
Fair
inspected September 2023
Type
Culvert
Concrete Continuous
Length
39 ft
3 main spans
Daily traffic
780
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1715 (sa 4015) over Nelson Creek is a concrete continuous culvert carrying Nfa 1715 (sa 4015) over Nelson Creek in Henry County, Tennessee. It was built in 1965, so it is 60 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 5 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 780 vehicles a day, roughly 3% of them trucks, projected to reach 1,248 by 2042. The structure is 39 ft (11.9 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesNfa 1715 (sa 4015)
CrossesNelson Creek
Location4 Mi. S. of SR140
RouteCounty Highway 1715
CountyHenry County
StateTennessee
Coordinates36.37989, -88.24978
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.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating60.7 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length39 ft (11.9 m)
Longest span12 ft (3.7 m)
Deck width31 ft (9.4 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic780 (2021)
Projected traffic1,248 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 1715 (sa 4015) over Nelson Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is Nfa 1715 (sa 4015) over Nelson 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 1715 (sa 4015) over Nelson Creek carry?

About 780 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1715 (sa 4015) over Nelson Creek?

The structure is 39 ft (11.9 m) long with a longest span of 12 ft (3.7 m) and a deck 31 ft wide.

Who owns Nfa 1715 (sa 4015) over Nelson Creek?

It is owned by the County Highway Agency.