US Bridges

Nfa A585 over Sulphur Creek

Good

Hickman County, Tennessee · Powder Mill RD · Structure no. 410A5850001

Built
1985
40 years old
Condition
Good
inspected October 2023
Type
Culvert
Concrete Continuous
Length
49 ft
3 main spans
Daily traffic
10
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A585 over Sulphur Creek is a concrete continuous culvert carrying Nfa A585 over Sulphur Creek in Hickman County, Tennessee. It was built in 1985, so it is 40 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 10 vehicles a day, roughly 2% of them trucks, projected to reach 16 by 2042. The structure is 49 ft (14.9 m) long and 16 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesNfa A585
CrossesSulphur Creek
LocationPowder Mill RD
RouteCounty Highway 585
CountyHickman County
StateTennessee
Coordinates35.71713, -87.62483
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length49 ft (14.9 m)
Longest span15 ft (4.6 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2020)
Projected traffic16 by 2042
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$301,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A585 over Sulphur Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is Nfa A585 over Sulphur 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 October 2023.

How much traffic does Nfa A585 over Sulphur Creek carry?

About 10 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A585 over Sulphur Creek?

The structure is 49 ft (14.9 m) long with a longest span of 15 ft (4.6 m) and a deck 16 ft wide.

Who owns Nfa A585 over Sulphur Creek?

It is owned by the County Highway Agency.