US Bridges

Nfa 1758 (sa 2002) over Elkins Branch

Good

Decatur County, Tennessee · 5.5 MI SE JCT SR20&SR100 · Structure no. 20017580001

Built
1955
70 years old
Condition
Good
inspected January 2024
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
193
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1758 (sa 2002) over Elkins Branch is a concrete continuous culvert carrying Nfa 1758 (sa 2002) over Elkins Branch in Decatur County, Tennessee. It was built in 1955, so it is 70 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 193 vehicles a day, roughly 3% of them trucks, projected to reach 309 by 2042. The structure is 26 ft (7.9 m) long and 33 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesNfa 1758 (sa 2002)
CrossesElkins Branch
Location5.5 MI SE JCT SR20&SR100
RouteCounty Highway 1758
Coordinates35.55414, -88.01389
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 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
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating43.5 US tons
Inventory rating17.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length26 ft (7.9 m)
Longest span12 ft (3.7 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic193 (2021)
Projected traffic309 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$434,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1758 (sa 2002) over Elkins Branch built?

It was built in 1955, making it 70 years old in 2025.

What condition is Nfa 1758 (sa 2002) over Elkins Branch 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 January 2024.

How much traffic does Nfa 1758 (sa 2002) over Elkins Branch carry?

About 193 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1758 (sa 2002) over Elkins Branch?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m) and a deck 33 ft wide.

Who owns Nfa 1758 (sa 2002) over Elkins Branch?

It is owned by the County Highway Agency.