US Bridges

Nfa 2230 (sa 7104) over Ensor Hollow Branch

Fair

Putnam County, Tennessee · 1MI from Smith CO Line · Structure no. 71022300001

Built
1960
65 years old
Condition
Fair
inspected August 2024
Type
Culvert
Concrete Continuous
Length
36 ft
3 main spans
Daily traffic
150
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 2230 (sa 7104) over Ensor Hollow Branch is a concrete continuous culvert carrying Nfa 2230 (sa 7104) over Ensor Hollow Branch in Putnam County, Tennessee. It was built in 1960, so it is 65 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 150 vehicles a day, roughly 3% of them trucks, projected to reach 240 by 2042. The structure is 36 ft (10.9 m) long and 50 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

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CarriesNfa 2230 (sa 7104)
CrossesEnsor Hollow Branch
Location1MI from Smith CO Line
RouteCounty Highway 2230
CountyPutnam County
StateTennessee
Coordinates36.21327, -85.77063
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating60.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length36 ft (10.9 m)
Longest span10 ft (3 m)
Deck width50 ft (15.2 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2021)
Projected traffic240 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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 2230 (sa 7104) over Ensor Hollow Branch built?

It was built in 1960, making it 65 years old in 2025.

What condition is Nfa 2230 (sa 7104) over Ensor Hollow Branch 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 2024.

How much traffic does Nfa 2230 (sa 7104) over Ensor Hollow Branch carry?

About 150 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 2230 (sa 7104) over Ensor Hollow Branch?

The structure is 36 ft (10.9 m) long with a longest span of 10 ft (3 m) and a deck 50 ft wide.

Who owns Nfa 2230 (sa 7104) over Ensor Hollow Branch?

It is owned by the County Highway Agency.