US Bridges

FAS 173 over Tiger Creek

Fair

Carter County, Tennessee · At Tiger Valley · Structure no. 10S23790007

Built
1941
84 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
48 ft
1 main span
Daily traffic
1,386
2021 count
Owner
State
State Highway Agency

About this bridge

FAS 173 over Tiger Creek is a steel stringer/multi-beam or girder carrying FAS 173 over Tiger Creek in Carter County, Tennessee. It was built in 1941, so it is 84 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 48 ft (14.6 m) long and 23 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesFAS 173
CrossesTiger Creek
LocationAt Tiger Valley
RouteState Highway 173
CountyCarter County
StateTennessee
Coordinates36.22822, -82.18895
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
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
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 rating43.7 US tons
Inventory rating25.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length48 ft (14.6 m)
Longest span43 ft (13.2 m)
Deck width23 ft (7 m)
Roadway width20 ft (6.1 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 closed6.8 mi (11 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 with deck rehabilitation or replacement
Estimated improvement cost$265,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FAS 173 over Tiger Creek built?

It was built in 1941, making it 84 years old in 2025.

What condition is FAS 173 over Tiger 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 May 2023.

How much traffic does FAS 173 over Tiger Creek carry?

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

How long is FAS 173 over Tiger Creek?

The structure is 48 ft (14.6 m) long with a longest span of 43 ft (13.2 m) and a deck 23 ft wide.

Who owns FAS 173 over Tiger Creek?

It is owned by the State Highway Agency.