US Bridges

FAS 173 over Mckinney Branch

Fair

Carter County, Tennessee · 1.5 M N of Stone Mts · Structure no. 10S23790001

Built
1945
80 years old
Condition
Fair
inspected May 2023
Type
Culvert
Concrete Continuous
Length
23 ft
2 main spans
Daily traffic
1,386
2021 count
Owner
State
State Highway Agency

About this bridge

FAS 173 over Mckinney Branch is a concrete continuous culvert carrying FAS 173 over Mckinney Branch in Carter County, Tennessee. It was built in 1945, so it is 80 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 5 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 1,386 vehicles a day, roughly 5% of them trucks, projected to reach 2,222 by 2041. The structure is 23 ft (7.1 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesFAS 173
CrossesMckinney Branch
Location1.5 M N of Stone Mts
RouteState Highway 173
CountyCarter County
StateTennessee
Coordinates36.21575, -82.21555
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 protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating39.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length23 ft (7.1 m)
Longest span10 ft (3.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,386 (2021)
Projected traffic2,222 by 2041
Trucks5%
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 173 over Mckinney Branch built?

It was built in 1945, making it 80 years old in 2025.

What condition is FAS 173 over Mckinney Branch 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 May 2023.

How much traffic does FAS 173 over Mckinney Branch carry?

About 1,386 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is FAS 173 over Mckinney Branch?

The structure is 23 ft (7.1 m) long with a longest span of 10 ft (3.1 m).

Who owns FAS 173 over Mckinney Branch?

It is owned by the State Highway Agency.