US Bridges

Nfa A066 (sa 4307) over Dry Creek

FairPosted for load

Humphreys County, Tennessee · Dry Cr. Rd. · Structure no. 430A0660001

Built
1988
37 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
72 ft
3 main spans
Daily traffic
200
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A066 (sa 4307) over Dry Creek is a steel stringer/multi-beam or girder carrying Nfa A066 (sa 4307) over Dry Creek in Humphreys County, Tennessee. It was built in 1988, so it is 37 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 200 vehicles a day, roughly 2% of them trucks, projected to reach 320 by 2042. The structure is 72 ft (21.9 m) long and 16 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

Location

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CarriesNfa A066 (sa 4307)
CrossesDry Creek
LocationDry Cr. Rd.
RouteCounty Highway 66
CountyHumphreys County
StateTennessee
Coordinates36.09583, -87.90628
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating18.2 US tons
Inventory rating13.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans3
Design loadUnknown
Structure length72 ft (21.9 m)
Longest span24 ft (7.3 m)
Deck width16 ft (4.8 m)
Roadway width15 ft (4.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2020)
Projected traffic320 by 2042
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$850,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A066 (sa 4307) over Dry Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is Nfa A066 (sa 4307) over Dry 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 September 2023.

How much traffic does Nfa A066 (sa 4307) over Dry Creek carry?

About 200 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A066 (sa 4307) over Dry Creek?

The structure is 72 ft (21.9 m) long with a longest span of 24 ft (7.3 m) and a deck 16 ft wide.

Who owns Nfa A066 (sa 4307) over Dry Creek?

It is owned by the County Highway Agency.