US Bridges

FAU 4523 over Little Obed River

Fair

Cumberland County, Tennessee · .1 MI from Hillcrest Dr. · Structure no. 180A5000001

Built
1956
69 years old
Condition
Fair
inspected May 2024
Type
Culvert
Steel
Length
37 ft
2 main spans
Daily traffic
3,887
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

FAU 4523 over Little Obed River is a steel culvert carrying FAU 4523 over Little Obed River in Cumberland County, Tennessee. It was built in 1956, so it is 69 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 3,887 vehicles a day, roughly 3% of them trucks, projected to reach 6,219 by 2042. The structure is 37 ft (11.3 m) long and 44 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesFAU 4523
CrossesLittle Obed River
Location.1 MI from Hillcrest Dr.
RouteCity Street 4523
CountyCumberland County
StateTennessee
Coordinates35.9752, -85.03483
Functional classUrban 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 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: 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 rating98.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadUnknown
Structure length37 ft (11.3 m)
Longest span14 ft (4.4 m)
Deck width44 ft (13.3 m)
Roadway width35 ft (10.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,887 (2021)
Projected traffic6,219 by 2042
Trucks3%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$353,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FAU 4523 over Little Obed River built?

It was built in 1956, making it 69 years old in 2025.

What condition is FAU 4523 over Little Obed River 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 2024.

How much traffic does FAU 4523 over Little Obed River carry?

About 3,887 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is FAU 4523 over Little Obed River?

The structure is 37 ft (11.3 m) long with a longest span of 14 ft (4.4 m) and a deck 44 ft wide.

Who owns FAU 4523 over Little Obed River?

It is owned by the City or Municipal Highway Agency.