US Bridges

Nfa A020 over M Fork Forked Deer River

Fair

Henderson County, Tennessee · 1.7 MI N of SR20 · Structure no. 390A0200001

Built
1984
41 years old
Condition
Fair
inspected July 2024
Type
Culvert
Concrete Continuous
Length
50 ft
3 main spans
Daily traffic
200
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A020 over M Fork Forked Deer River is a concrete continuous culvert carrying Nfa A020 over M Fork Forked Deer River in Henderson 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 200 vehicles a day, roughly 6% of them trucks, projected to reach 320 by 2040. The structure is 50 ft (15.2 m) long and 25 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesNfa A020
CrossesM Fork Forked Deer River
Location1.7 MI N of SR20
RouteCounty Highway 20
CountyHenderson County
StateTennessee
Coordinates35.69959, -88.48975
Functional classRural Local

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span15 ft (4.6 m)
Deck width25 ft (7.6 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2020)
Projected traffic320 by 2040
Trucks6%
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 A020 over M Fork Forked Deer River built?

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

What condition is Nfa A020 over M Fork Forked Deer River 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 July 2024.

How much traffic does Nfa A020 over M Fork Forked Deer River carry?

About 200 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is Nfa A020 over M Fork Forked Deer River?

The structure is 50 ft (15.2 m) long with a longest span of 15 ft (4.6 m) and a deck 25 ft wide.

Who owns Nfa A020 over M Fork Forked Deer River?

It is owned by the County Highway Agency.