US Bridges

Nfa A046 over Penhook Branch

Fair

Humphreys County, Tennessee · On Gill Rd. · Structure no. 430A0460001

Built
1986
39 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete Continuous
Length
58 ft
3 main spans
Daily traffic
30
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A046 over Penhook Branch is a concrete continuous culvert carrying Nfa A046 over Penhook Branch in Humphreys County, Tennessee. It was built in 1986, so it is 39 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 30 vehicles a day, roughly 2% of them trucks, projected to reach 48 by 2042. The structure is 58 ft (17.7 m) long and 26 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesNfa A046
CrossesPenhook Branch
LocationOn Gill Rd.
RouteCounty Highway 46
CountyHumphreys County
StateTennessee
Coordinates36.2152, -87.72385
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
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 rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length58 ft (17.7 m)
Longest span18 ft (5.5 m)
Deck width26 ft (7.9 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2020)
Projected traffic48 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 A046 over Penhook Branch built?

It was built in 1986, making it 39 years old in 2025.

What condition is Nfa A046 over Penhook 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 A046 over Penhook Branch carry?

About 30 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A046 over Penhook Branch?

The structure is 58 ft (17.7 m) long with a longest span of 18 ft (5.5 m) and a deck 26 ft wide.

Who owns Nfa A046 over Penhook Branch?

It is owned by the County Highway Agency.