US Bridges

FAP 50 over Snell Branch

Good

Marshall County, Tennessee · .2 M W JCT SR11&SR50 · Structure no. 59SR0500017

Built
1961
64 years old
Condition
Good
inspected August 2024
Type
Culvert
Concrete Continuous
Length
30 ft
2 main spans
Daily traffic
15,726
2021 count
Owner
State
State Highway Agency

About this bridge

FAP 50 over Snell Branch is a concrete continuous culvert carrying FAP 50 over Snell Branch in Marshall County, Tennessee. It was built in 1961, so it is 64 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 15,726 vehicles a day, roughly 9% of them trucks, projected to reach 28,192 by 2041. The structure is 30 ft (9.2 m) long and 86 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

CarriesFAP 50
CrossesSnell Branch
Location.2 M W JCT SR11&SR50
RouteU.S. Route 431
Coordinates35.46356, -86.78551
Functional classUrban Other Principal Arterial

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 protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length30 ft (9.2 m)
Longest span30 ft (9.1 m)
Deck width86 ft (26.2 m)
Roadway width80 ft (24.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,726 (2021)
Projected traffic28,192 by 2041
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FAP 50 over Snell Branch built?

It was built in 1961, making it 64 years old in 2025.

What condition is FAP 50 over Snell 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 August 2024.

How much traffic does FAP 50 over Snell Branch carry?

About 15,726 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is FAP 50 over Snell Branch?

The structure is 30 ft (9.2 m) long with a longest span of 30 ft (9.1 m) and a deck 86 ft wide.

Who owns FAP 50 over Snell Branch?

It is owned by the State Highway Agency.