US Bridges

Nfa A478 (sa 7116) over Hudgens Creek

Fair

Putnam County, Tennessee · 2 MI from SR42 · Structure no. 710A4780003

Built
1970
55 years old
Condition
Fair
inspected August 2024
Type
Culvert
Concrete Continuous
Length
28 ft
2 main spans
Daily traffic
270
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A478 (sa 7116) over Hudgens Creek is a concrete continuous culvert carrying Nfa A478 (sa 7116) over Hudgens Creek in Putnam County, Tennessee. It was built in 1970, so it is 55 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 270 vehicles a day, roughly 2% of them trucks, projected to reach 432 by 2042. The structure is 28 ft (8.5 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesNfa A478 (sa 7116)
CrossesHudgens Creek
Location2 MI from SR42
RouteCounty Highway 478
CountyPutnam County
StateTennessee
Coordinates36.08824, -85.51849
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 inspectionAugust 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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating53.6 US tons
Inventory rating31.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length28 ft (8.5 m)
Longest span13 ft (3.9 m)
Deck width26 ft (8 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic270 (2020)
Projected traffic432 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 A478 (sa 7116) over Hudgens Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is Nfa A478 (sa 7116) over Hudgens 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 2024.

How much traffic does Nfa A478 (sa 7116) over Hudgens Creek carry?

About 270 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A478 (sa 7116) over Hudgens Creek?

The structure is 28 ft (8.5 m) long with a longest span of 13 ft (3.9 m) and a deck 26 ft wide.

Who owns Nfa A478 (sa 7116) over Hudgens Creek?

It is owned by the County Highway Agency.