US Bridges

FAU 17 350042B over CSX Railroad

Fair

Hamilton County, Tennessee · 1 Mi.East of Chattanooga · Structure no. 33SR0580011

Built
1928
97 years old, rebuilt 1996
Condition
Fair
inspected October 2024
Type
Tee Beam
Concrete
Length
121 ft
3 main spans
Daily traffic
18,838
2021 count
Owner
State
State Highway Agency

About this bridge

FAU 17 350042B over CSX Railroad is a concrete tee beam carrying FAU 17 350042B over CSX Railroad in Hamilton County, Tennessee. It was built in 1928 and reconstructed in 1996, so it is 97 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 18,838 vehicles a day, roughly 7% of them trucks, projected to reach 36,240 by 2041. The structure is 121 ft (36.9 m) long and 43 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

Location

Open in Google Maps
CarriesFAU 17 350042B
CrossesCSX Railroad
Location1 Mi.East of Chattanooga
RouteState Highway 17
CountyHamilton County
StateTennessee
Coordinates35.07973, -85.22157
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.8 US tons
Inventory rating27.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length121 ft (36.9 m)
Longest span43 ft (13.1 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,838 (2021)
Projected traffic36,240 by 2041
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
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$1.2 million (2021 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was FAU 17 350042B over CSX Railroad built?

It was built in 1928, making it 97 years old in 2025. It was reconstructed in 1996.

What condition is FAU 17 350042B over CSX Railroad 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 350042B over CSX Railroad carry?

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

How long is FAU 17 350042B over CSX Railroad?

The structure is 121 ft (36.9 m) long with a longest span of 43 ft (13.1 m) and a deck 43 ft wide.

Who owns FAU 17 350042B over CSX Railroad?

It is owned by the State Highway Agency.