US Bridges

Nfa 869 (sa 3506) over Overflow

Fair

Hardeman County, Tennessee · 2.5 MI W of Mcnairy Co. · Structure no. 35S80810005

Built
1995
30 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
600 ft
10 main spans
Daily traffic
369
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 869 (sa 3506) over Overflow is a prestressed concrete continuous stringer/multi-beam or girder carrying Nfa 869 (sa 3506) over Overflow in Hardeman County, Tennessee. It was built in 1995, so it is 30 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 369 vehicles a day, roughly 3% of them trucks, projected to reach 768 by 2040. The structure is 600 ft (182.9 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa 869 (sa 3506)
CrossesOverflow
Location2.5 MI W of Mcnairy Co.
RouteCounty Highway 869
CountyHardeman County
StateTennessee
Coordinates35.12255, -88.8167
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to 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 rating60.7 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, precast panels
Main spans10
Design loadHS 20
Structure length600 ft (182.9 m)
Longest span60 ft (18.3 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic369 (2021)
Projected traffic768 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 869 (sa 3506) over Overflow built?

It was built in 1995, making it 30 years old in 2025.

What condition is Nfa 869 (sa 3506) over Overflow 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 August 2024.

How much traffic does Nfa 869 (sa 3506) over Overflow carry?

About 369 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 869 (sa 3506) over Overflow?

The structure is 600 ft (182.9 m) long with a longest span of 60 ft (18.3 m) and a deck 30 ft wide.

Who owns Nfa 869 (sa 3506) over Overflow?

It is owned by the County Highway Agency.