US Bridges

Nfa A327 over Middle Prong Doe Creek

PoorPosted for load

Henderson County, Tennessee · 0.3 MI W of Decatur Co. · Structure no. 390A3270001

Built
1977
48 years old
Condition
Poor
inspected June 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
40 ft
2 main spans
Daily traffic
20
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A327 over Middle Prong Doe Creek is a wood or timber stringer/multi-beam or girder carrying Nfa A327 over Middle Prong Doe Creek in Henderson County, Tennessee. It was built in 1977, so it is 48 years old, older than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 20 vehicles a day, roughly 2% of them trucks, projected to reach 32 by 2042. The structure is 40 ft (12.2 m) long and 16 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesNfa A327
CrossesMiddle Prong Doe Creek
Location0.3 MI W of Decatur Co.
RouteCounty Highway 327
Coordinates35.46206, -88.2512
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating7.8 US tons
Inventory rating6.1 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadUnknown
Structure length40 ft (12.2 m)
Longest span20 ft (6.1 m)
Deck width16 ft (4.8 m)
Roadway width15 ft (4.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2020)
Projected traffic32 by 2042
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$251,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A327 over Middle Prong Doe Creek built?

It was built in 1977, making it 48 years old in 2025.

What condition is Nfa A327 over Middle Prong Doe Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2024.

How much traffic does Nfa A327 over Middle Prong Doe Creek carry?

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

How long is Nfa A327 over Middle Prong Doe Creek?

The structure is 40 ft (12.2 m) long with a longest span of 20 ft (6.1 m) and a deck 16 ft wide.

Who owns Nfa A327 over Middle Prong Doe Creek?

It is owned by the County Highway Agency.