US Bridges

Nfa A284 over Sugar Creek

Good

Bedford County, Tennessee · 5.5 M S of Shelbyville · Structure no. 020A2840001

Built
1984
41 years old
Condition
Good
inspected December 2024
Type
Culvert
Concrete Continuous
Length
48 ft
3 main spans
Daily traffic
30
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A284 over Sugar Creek is a concrete continuous culvert carrying Nfa A284 over Sugar Creek in Bedford 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 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 30 vehicles a day, roughly 2% of them trucks, projected to reach 48 by 2041. The structure is 48 ft (14.5 m) long and 25 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

CarriesNfa A284
CrossesSugar Creek
Location5.5 M S of Shelbyville
RouteCounty Highway 284
Coordinates35.39136, -86.51089
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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length48 ft (14.5 m)
Longest span15 ft (4.6 m)
Deck width25 ft (7.6 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2020)
Projected traffic48 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 A284 over Sugar Creek built?

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

What condition is Nfa A284 over Sugar 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 December 2024.

How much traffic does Nfa A284 over Sugar Creek carry?

About 30 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A284 over Sugar Creek?

The structure is 48 ft (14.5 m) long with a longest span of 15 ft (4.6 m) and a deck 25 ft wide.

Who owns Nfa A284 over Sugar Creek?

It is owned by the County Highway Agency.