US Bridges

FAU 17 over Chickamauga Creek

Fair

Hamilton County, Tennessee · 0.72 Mi. W of SR-153 Jct. · Structure no. 33SR0580013

Built
1929
96 years old, rebuilt 1981
Condition
Fair
inspected October 2024
Type
Truss - Thru
Steel
Length
420 ft
1 main span
Daily traffic
18,838
2021 count
Owner
State
State Highway Agency

About this bridge

FAU 17 over Chickamauga Creek is a steel truss - thru carrying FAU 17 over Chickamauga Creek in Hamilton County, Tennessee. It was built in 1929 and reconstructed in 1981, so it is 96 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. Its operating status is: open, posting recommended but not legally implemented.

It carries about 18,838 vehicles a day, roughly 7% of them trucks, projected to reach 30,141 by 2042. The structure is 420 ft (128 m) long and 43 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

CarriesFAU 17
CrossesChickamauga Creek
Location0.72 Mi. W of SR-153 Jct.
RouteState Highway 17
Coordinates35.08012, -85.2189
Functional classUrban Other Principal Arterial

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, posting recommended but not legally implemented
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating23.6 US tons
Inventory rating18.2 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+6 approach)
Design loadH 15
Structure length420 ft (128 m)
Longest span162 ft (49.4 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deck16 ft (5 m)

Traffic and service

Average daily traffic18,838 (2021)
Projected traffic30,141 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.9 mi (40 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$5.1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FAU 17 over Chickamauga Creek built?

It was built in 1929, making it 96 years old in 2025. It was reconstructed in 1981.

What condition is FAU 17 over Chickamauga 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 October 2024.

How much traffic does FAU 17 over Chickamauga Creek carry?

About 18,838 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is FAU 17 over Chickamauga Creek?

The structure is 420 ft (128 m) long with a longest span of 162 ft (49.4 m) and a deck 43 ft wide.

Who owns FAU 17 over Chickamauga Creek?

It is owned by the State Highway Agency.