US Bridges

Nfa A301 over Sink Creek

Good

DeKalb County, Tennessee · .25 MI Blue Spgs Rd. · Structure no. 210A3010001

Built
1984
41 years old
Condition
Good
inspected November 2023
Type
Culvert
Concrete Continuous
Length
24 ft
2 main spans
Daily traffic
20
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A301 over Sink Creek is a concrete continuous culvert carrying Nfa A301 over Sink Creek in DeKalb 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 20 vehicles a day, roughly 2% of them trucks, projected to reach 32 by 2042. The structure is 24 ft (7.3 m) long and 26 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesNfa A301
CrossesSink Creek
Location.25 MI Blue Spgs Rd.
RouteCounty Highway 301
CountyDeKalb County
StateTennessee
Coordinates35.86967, -85.85218
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2023
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating67.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span12 ft (3.7 m)
Deck width26 ft (7.9 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2020)
Projected traffic32 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 A301 over Sink Creek built?

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

What condition is Nfa A301 over Sink 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 November 2023.

How much traffic does Nfa A301 over Sink Creek carry?

About 20 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A301 over Sink Creek?

The structure is 24 ft (7.3 m) long with a longest span of 12 ft (3.7 m) and a deck 26 ft wide.

Who owns Nfa A301 over Sink Creek?

It is owned by the County Highway Agency.