US Bridges

Nfa 1437 (sa 6604) over Branch

Good

Obion County, Tennessee · 5 MI W of Obion City · Structure no. 66S80050007

Built
1998
27 years old
Condition
Good
inspected March 2023
Type
Culvert
Concrete
Length
32 ft
1 main span
Daily traffic
587
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1437 (sa 6604) over Branch is a concrete culvert carrying Nfa 1437 (sa 6604) over Branch in Obion County, Tennessee. It was built in 1998, so it is 27 years old, younger 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 587 vehicles a day, roughly 3% of them trucks, projected to reach 816 by 2041. The structure is 32 ft (9.8 m) long and 34 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa 1437 (sa 6604)
CrossesBranch
Location5 MI W of Obion City
RouteCounty Highway 1437
CountyObion County
StateTennessee
Coordinates36.26344, -89.2973
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span32 ft (9.8 m)
Deck width34 ft (10.3 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic587 (2021)
Projected traffic816 by 2041
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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1437 (sa 6604) over Branch built?

It was built in 1998, making it 27 years old in 2025.

What condition is Nfa 1437 (sa 6604) over 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 March 2023.

How much traffic does Nfa 1437 (sa 6604) over Branch carry?

About 587 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1437 (sa 6604) over Branch?

The structure is 32 ft (9.8 m) long with a longest span of 32 ft (9.8 m) and a deck 34 ft wide.

Who owns Nfa 1437 (sa 6604) over Branch?

It is owned by the County Highway Agency.