US Bridges

Nfa 910 (sa 4201) over Dry Hollow Branch

Fair

Houston County, Tennessee · 1 M SW of Mckinnon · Structure no. 42S62610003

Built
1947
78 years old
Condition
Fair
inspected January 2024
Type
Culvert
Concrete Continuous
Length
39 ft
3 main spans
Daily traffic
224
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 910 (sa 4201) over Dry Hollow Branch is a concrete continuous culvert carrying Nfa 910 (sa 4201) over Dry Hollow Branch in Houston County, Tennessee. It was built in 1947, so it is 78 years old, older 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 224 vehicles a day, roughly 3% of them trucks, projected to reach 314 by 2042. The structure is 39 ft (11.9 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa 910 (sa 4201)
CrossesDry Hollow Branch
Location1 M SW of Mckinnon
RouteCounty Highway 910
CountyHouston County
StateTennessee
Coordinates36.30537, -87.91792
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 inspectionJanuary 2024
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
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.5 US tons
Inventory rating24.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadH 15
Structure length39 ft (11.9 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic224 (2021)
Projected traffic314 by 2042
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 statusHistorical significance not determinable at this time
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$368,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 910 (sa 4201) over Dry Hollow Branch built?

It was built in 1947, making it 78 years old in 2025.

What condition is Nfa 910 (sa 4201) over Dry Hollow 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 January 2024.

How much traffic does Nfa 910 (sa 4201) over Dry Hollow Branch carry?

About 224 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 910 (sa 4201) over Dry Hollow Branch?

The structure is 39 ft (11.9 m) long with a longest span of 12 ft (3.7 m).

Who owns Nfa 910 (sa 4201) over Dry Hollow Branch?

It is owned by the County Highway Agency.