US Bridges

FAU 3580 over Branch

Fair

Hamilton County, Tennessee · Near Lee HWY Jct. · Structure no. 33S43410011

Built
1950
75 years old
Condition
Fair
inspected June 2023
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
24,904
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

FAU 3580 over Branch is a concrete continuous culvert carrying FAU 3580 over Branch in Hamilton County, Tennessee. It was built in 1950, so it is 75 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 24,904 vehicles a day, roughly 7% of them trucks, projected to reach 39,846 by 2042. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesFAU 3580
CrossesBranch
LocationNear Lee HWY Jct.
RouteCity Street 3580
CountyHamilton County
StateTennessee
Coordinates35.04407, -85.16345
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length26 ft (7.9 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,904 (2021)
Projected traffic39,846 by 2042
Trucks7%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$278,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FAU 3580 over Branch built?

It was built in 1950, making it 75 years old in 2025.

What condition is FAU 3580 over 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 June 2023.

How much traffic does FAU 3580 over Branch carry?

About 24,904 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is FAU 3580 over Branch?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m).

Who owns FAU 3580 over Branch?

It is owned by the City or Municipal Highway Agency.