US Bridges

Nfa A278 over Long Creek

Good

Macon County, Tennessee · 5 M W Red Boiling Springs · Structure no. 560A2780001

Built
2005
20 years old
Condition
Good
inspected August 2023
Type
Culvert
Concrete Continuous
Length
59 ft
3 main spans
Daily traffic
40
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A278 over Long Creek is a concrete continuous culvert carrying Nfa A278 over Long Creek in Macon County, Tennessee. It was built in 2005, so it is 20 years old, younger than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 40 vehicles a day, roughly 1% of them trucks, projected to reach 64 by 2041. The structure is 59 ft (17.9 m) long and 28 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesNfa A278
CrossesLong Creek
Location5 M W Red Boiling Springs
RouteCounty Highway 278
Coordinates36.53316, -85.93733
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length59 ft (17.9 m)
Longest span18 ft (5.5 m)
Deck width28 ft (8.4 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2020)
Projected traffic64 by 2041
Trucks1%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 A278 over Long Creek built?

It was built in 2005, making it 20 years old in 2025.

What condition is Nfa A278 over Long Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.

How much traffic does Nfa A278 over Long Creek carry?

About 40 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Nfa A278 over Long Creek?

The structure is 59 ft (17.9 m) long with a longest span of 18 ft (5.5 m) and a deck 28 ft wide.

Who owns Nfa A278 over Long Creek?

It is owned by the County Highway Agency.