US Bridges

Nfa 1408 (sa 1607) over I24

Good

Coffee County, Tennessee · 0.7 MI W of SR-2 · Structure no. 16I00240055

Built
1963
62 years old
Condition
Good
inspected October 2023
Type
Tee Beam
Concrete Continuous
Length
337 ft
4 main spans
Daily traffic
501
2021 count
Owner
State
State Highway Agency

About this bridge

Nfa 1408 (sa 1607) over I24 is a concrete continuous tee beam carrying Nfa 1408 (sa 1607) over I24 in Coffee County, Tennessee. It was built in 1963, so it is 62 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 501 vehicles a day, roughly 3% of them trucks, projected to reach 802 by 2042. The structure is 337 ft (102.7 m) long and 29 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesNfa 1408 (sa 1607)
CrossesI24
Location0.7 MI W of SR-2
RouteCounty Highway 1408
CountyCoffee County
StateTennessee
Coordinates35.33348, -85.93494
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating41.7 US tons
Inventory rating24.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length337 ft (102.7 m)
Longest span99 ft (30.3 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic501 (2021)
Projected traffic802 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$559,000 (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nfa 1408 (sa 1607) over I24 built?

It was built in 1963, making it 62 years old in 2025.

What condition is Nfa 1408 (sa 1607) over I24 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 October 2023.

How much traffic does Nfa 1408 (sa 1607) over I24 carry?

About 501 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1408 (sa 1607) over I24?

The structure is 337 ft (102.7 m) long with a longest span of 99 ft (30.3 m) and a deck 29 ft wide.

Who owns Nfa 1408 (sa 1607) over I24?

It is owned by the State Highway Agency.