US Bridges

FAU 3831 over Mossy Creek

Fair

Jefferson County, Tennessee · In Jefferson City · Structure no. 45M38310001

Built
1988
37 years old
Condition
Fair
inspected May 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
30 ft
1 main span
Daily traffic
3,187
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

FAU 3831 over Mossy Creek is a prestressed concrete box beam or girders - multiple carrying FAU 3831 over Mossy Creek in Jefferson County, Tennessee. It was built in 1988, so it is 37 years old, younger 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 3,187 vehicles a day, roughly 3% of them trucks, projected to reach 5,266 by 2041. The structure is 30 ft (9.1 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesFAU 3831
CrossesMossy Creek
LocationIn Jefferson City
RouteCity Street 3831
CountyJefferson County
StateTennessee
Coordinates36.1275, -83.49275
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
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 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 alignment6: Equal to present minimum criteria
Operating rating45.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span27 ft (8.2 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,187 (2021)
Projected traffic5,266 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$181,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FAU 3831 over Mossy Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is FAU 3831 over Mossy 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 FAU 3831 over Mossy Creek carry?

About 3,187 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is FAU 3831 over Mossy Creek?

The structure is 30 ft (9.1 m) long with a longest span of 27 ft (8.2 m) and a deck 27 ft wide.

Who owns FAU 3831 over Mossy Creek?

It is owned by the City or Municipal Highway Agency.