US Bridges

Nfa 1783 (sa 4204) over North Fork

Good

Houston County, Tennessee · 4 M S of Tenn Ridge · Structure no. 42017830001

Built
1960
65 years old
Condition
Good
inspected February 2024
Type
Culvert
Concrete Continuous
Length
27 ft
2 main spans
Daily traffic
153
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1783 (sa 4204) over North Fork is a concrete continuous culvert carrying Nfa 1783 (sa 4204) over North Fork in Houston County, Tennessee. It was built in 1960, so it is 65 years old, older than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 153 vehicles a day, roughly 3% of them trucks, projected to reach 272 by 2042. The structure is 27 ft (8.2 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesNfa 1783 (sa 4204)
CrossesNorth Fork
Location4 M S of Tenn Ridge
RouteCounty Highway 1783
CountyHouston County
StateTennessee
Coordinates36.25512, -87.77126
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 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
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating35.7 US tons
Inventory rating21.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length27 ft (8.2 m)
Longest span12 ft (3.7 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic153 (2021)
Projected traffic272 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$70,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1783 (sa 4204) over North Fork built?

It was built in 1960, making it 65 years old in 2025.

What condition is Nfa 1783 (sa 4204) over North Fork in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2024.

How much traffic does Nfa 1783 (sa 4204) over North Fork carry?

About 153 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1783 (sa 4204) over North Fork?

The structure is 27 ft (8.2 m) long with a longest span of 12 ft (3.7 m) and a deck 26 ft wide.

Who owns Nfa 1783 (sa 4204) over North Fork?

It is owned by the County Highway Agency.