US Bridges

FAS 146 over Mountain Creek

Fair

Cannon County, Tennessee · 1 Mi.N.Of Osment Chapel · Structure no. 08SR1460001

Built
1948
77 years old
Condition
Fair
inspected January 2025
Type
Culvert
Concrete Continuous
Length
24 ft
2 main spans
Daily traffic
1,570
2021 count
Owner
State
State Highway Agency

About this bridge

FAS 146 over Mountain Creek is a concrete continuous culvert carrying FAS 146 over Mountain Creek in Cannon County, Tennessee. It was built in 1948, so it is 77 years old, older than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,570 vehicles a day, roughly 5% of them trucks, projected to reach 2,640 by 2041. The structure is 24 ft (7.3 m) long and 28 ft wide. If it were closed, the detour would be 52.2 mi (84 km).

Location

Open in Google Maps
CarriesFAS 146
CrossesMountain Creek
Location1 Mi.N.Of Osment Chapel
RouteState Highway 146
CountyCannon County
StateTennessee
Coordinates35.85237, -85.94334
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.6 US tons
Inventory rating31.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length24 ft (7.3 m)
Longest span10 ft (3 m)
Deck width28 ft (8.6 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,570 (2021)
Projected traffic2,640 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed52.2 mi (84 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$101,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FAS 146 over Mountain Creek built?

It was built in 1948, making it 77 years old in 2025.

What condition is FAS 146 over Mountain Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2025.

How much traffic does FAS 146 over Mountain Creek carry?

About 1,570 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is FAS 146 over Mountain Creek?

The structure is 24 ft (7.3 m) long with a longest span of 10 ft (3 m) and a deck 28 ft wide.

Who owns FAS 146 over Mountain Creek?

It is owned by the State Highway Agency.