US Bridges

Nfa A261 over Sulphur Fork Creek

Good

Robertson County, Tennessee · 3.6 MI SW JCT I65&SR76 · Structure no. 740A2610001

Built
1975
50 years old
Condition
Good
inspected April 2024
Type
Tee Beam
Concrete
Length
40 ft
1 main span
Daily traffic
110
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A261 over Sulphur Fork Creek is a concrete tee beam carrying Nfa A261 over Sulphur Fork Creek in Robertson County, Tennessee. It was built in 1975, so it is 50 years old, older 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 110 vehicles a day, roughly 2% of them trucks, projected to reach 176 by 2042. The structure is 40 ft (12.2 m) long and 28 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesNfa A261
CrossesSulphur Fork Creek
Location3.6 MI SW JCT I65&SR76
RouteCounty Highway 261
Coordinates36.45805, -86.74506
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length40 ft (12.2 m)
Longest span38 ft (11.6 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic110 (2020)
Projected traffic176 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 A261 over Sulphur Fork Creek built?

It was built in 1975, making it 50 years old in 2025.

What condition is Nfa A261 over Sulphur Fork 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 April 2024.

How much traffic does Nfa A261 over Sulphur Fork Creek carry?

About 110 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A261 over Sulphur Fork Creek?

The structure is 40 ft (12.2 m) long with a longest span of 38 ft (11.6 m) and a deck 28 ft wide.

Who owns Nfa A261 over Sulphur Fork Creek?

It is owned by the County Highway Agency.