US Bridges

Nfa 1781 (sa 4311) over Shiloh Branch

Fair

Humphreys County, Tennessee · 0.2 M. S. Houston Co. Ln. · Structure no. 43017810007

Built
1984
41 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
668
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1781 (sa 4311) over Shiloh Branch is a concrete continuous culvert carrying Nfa 1781 (sa 4311) over Shiloh Branch in Humphreys County, Tennessee. It was built in 1984, so it is 41 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.

It carries about 668 vehicles a day, roughly 3% of them trucks, projected to reach 1,069 by 2042. The structure is 22 ft (6.7 m) long and 30 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesNfa 1781 (sa 4311)
CrossesShiloh Branch
Location0.2 M. S. Houston Co. Ln.
RouteCounty Highway 1781
CountyHumphreys County
StateTennessee
Coordinates36.24178, -87.77447
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating96.1 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width30 ft (9 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic668 (2021)
Projected traffic1,069 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 1781 (sa 4311) over Shiloh Branch built?

It was built in 1984, making it 41 years old in 2025.

What condition is Nfa 1781 (sa 4311) over Shiloh Branch 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 2023.

How much traffic does Nfa 1781 (sa 4311) over Shiloh Branch carry?

About 668 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1781 (sa 4311) over Shiloh Branch?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m) and a deck 30 ft wide.

Who owns Nfa 1781 (sa 4311) over Shiloh Branch?

It is owned by the County Highway Agency.