US Bridges

Nfa A237 over Sink Creek

Fair

DeKalb County, Tennessee · 3MI North of Warren Co. · Structure no. 210A1900001

Built
1991
34 years old
Condition
Fair
inspected November 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
184 ft
4 main spans
Daily traffic
40
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A237 over Sink Creek is a prestressed concrete box beam or girders - multiple carrying Nfa A237 over Sink Creek in DeKalb County, Tennessee. It was built in 1991, so it is 34 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 40 vehicles a day, roughly 2% of them trucks, projected to reach 64 by 2042. The structure is 184 ft (56.1 m) long and 24 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesNfa A237
CrossesSink Creek
Location3MI North of Warren Co.
RouteCounty Highway 237
CountyDeKalb County
StateTennessee
Coordinates35.87366, -85.7192
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating100.3 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length184 ft (56.1 m)
Longest span47 ft (14.3 m)
Deck width24 ft (7.4 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2020)
Projected traffic64 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 A237 over Sink Creek built?

It was built in 1991, making it 34 years old in 2025.

What condition is Nfa A237 over Sink 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 November 2023.

How much traffic does Nfa A237 over Sink Creek carry?

About 40 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A237 over Sink Creek?

The structure is 184 ft (56.1 m) long with a longest span of 47 ft (14.3 m) and a deck 24 ft wide.

Who owns Nfa A237 over Sink Creek?

It is owned by the County Highway Agency.