US Bridges

FAS 246 over Mahon Branch

Good

Maury County, Tennessee · 2 M NW JCT SR6&SR246 · Structure no. 60S61810005

Built
2018
7 years old
Condition
Good
inspected March 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
63 ft
1 main span
Daily traffic
3,605
2021 count
Owner
State
State Highway Agency

About this bridge

FAS 246 over Mahon Branch is a prestressed concrete box beam or girders - multiple carrying FAS 246 over Mahon Branch in Maury County, Tennessee. It was built in 2018, so it is 7 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 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 3,605 vehicles a day, roughly 4% of them trucks, projected to reach 5,768 by 2042. The structure is 63 ft (19.2 m) long and 25 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesFAS 246
CrossesMahon Branch
Location2 M NW JCT SR6&SR246
RouteState Highway 246
Coordinates35.69853, -87.01355
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length63 ft (19.2 m)
Longest span60 ft (18.3 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,605 (2021)
Projected traffic5,768 by 2042
Trucks4%
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

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 FAS 246 over Mahon Branch built?

It was built in 2018, making it 7 years old in 2025.

What condition is FAS 246 over Mahon 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 2024.

How much traffic does FAS 246 over Mahon Branch carry?

About 3,605 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is FAS 246 over Mahon Branch?

The structure is 63 ft (19.2 m) long with a longest span of 60 ft (18.3 m) and a deck 25 ft wide.

Who owns FAS 246 over Mahon Branch?

It is owned by the State Highway Agency.