US Bridges

FAU 131 over Lammie Branch

Fair

Knox County, Tennessee · .3 M W of SR33 · Structure no. 47SR1310001

Built
1939
86 years old
Condition
Fair
inspected January 2024
Type
Culvert
Concrete Continuous
Length
38 ft
3 main spans
Daily traffic
12,226
2021 count
Owner
State
State Highway Agency

About this bridge

FAU 131 over Lammie Branch is a concrete continuous culvert carrying FAU 131 over Lammie Branch in Knox County, Tennessee. It was built in 1939, so it is 86 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 12,226 vehicles a day, roughly 4% of them trucks, projected to reach 17,770 by 2042. The structure is 38 ft (11.6 m) long and 23 ft wide. If it were closed, the detour would be 31.7 mi (51 km).

Location

Open in Google Maps
CarriesFAU 131
CrossesLammie Branch
Location.3 M W of SR33
RouteState Highway 131
CountyKnox County
StateTennessee
Coordinates36.08547, -83.92098
Functional classUrban Minor 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 inspectionJanuary 2024
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 adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment6: Equal to present minimum criteria
Operating rating39.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length38 ft (11.6 m)
Longest span15 ft (4.6 m)
Deck width23 ft (6.9 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,226 (2021)
Projected traffic17,770 by 2042
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.7 mi (51 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$779,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FAU 131 over Lammie Branch built?

It was built in 1939, making it 86 years old in 2025.

What condition is FAU 131 over Lammie 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 January 2024.

How much traffic does FAU 131 over Lammie Branch carry?

About 12,226 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is FAU 131 over Lammie Branch?

The structure is 38 ft (11.6 m) long with a longest span of 15 ft (4.6 m) and a deck 23 ft wide.

Who owns FAU 131 over Lammie Branch?

It is owned by the State Highway Agency.