US Bridges

Nfa A478 (sa 7116) over Pigeon Roost Creek

Fair

Putnam County, Tennessee · .5 MI from White CO Line · Structure no. 710A4780001

Built
1987
38 years old
Condition
Fair
inspected August 2024
Type
Culvert
Concrete Continuous
Length
38 ft
3 main spans
Daily traffic
460
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa A478 (sa 7116) over Pigeon Roost Creek is a concrete continuous culvert carrying Nfa A478 (sa 7116) over Pigeon Roost Creek in Putnam County, Tennessee. It was built in 1987, so it is 38 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 460 vehicles a day, roughly 2% of them trucks, projected to reach 736 by 2042. The structure is 38 ft (11.6 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesNfa A478 (sa 7116)
CrossesPigeon Roost Creek
Location.5 MI from White CO Line
RouteCity Street 478
CountyPutnam County
StateTennessee
Coordinates36.08847, -85.50764
Functional classUrban 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
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length38 ft (11.6 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic460 (2020)
Projected traffic736 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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Pigeon Roost Creek built?

It was built in 1987, making it 38 years old in 2025.

What condition is Nfa A478 (sa 7116) over Pigeon Roost 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 Pigeon Roost Creek carry?

About 460 vehicles per day (2020 count), of which roughly 2% are trucks.

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

The structure is 38 ft (11.6 m) long with a longest span of 10 ft (3 m).

Who owns Nfa A478 (sa 7116) over Pigeon Roost Creek?

It is owned by the City or Municipal Highway Agency.