US Bridges

Nfa A073 over Lackey Creek

Fair

Blount County, Tennessee · NW of US321 at Maryville · Structure no. 050A0730003

Built
1925
100 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete Continuous
Length
60 ft
2 main spans
Daily traffic
120
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A073 over Lackey Creek is a concrete continuous culvert carrying Nfa A073 over Lackey Creek in Blount County, Tennessee. It was built in 1925, so it is 100 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 120 vehicles a day, roughly 2% of them trucks, projected to reach 192 by 2042. The structure is 60 ft (18.3 m) long and 17 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesNfa A073
CrossesLackey Creek
LocationNW of US321 at Maryville
RouteCounty Highway 73
CountyBlount County
StateTennessee
Coordinates35.78876, -84.0433
Functional classUrban Local

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 inspectionNovember 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.5 US tons
Inventory rating24.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span28 ft (8.5 m)
Deck width17 ft (5.1 m)
Roadway width15 ft (4.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic120 (2020)
Projected traffic192 by 2042
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$289,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A073 over Lackey Creek built?

It was built in 1925, making it 100 years old in 2025.

What condition is Nfa A073 over Lackey 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 November 2023.

How much traffic does Nfa A073 over Lackey Creek carry?

About 120 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A073 over Lackey Creek?

The structure is 60 ft (18.3 m) long with a longest span of 28 ft (8.5 m) and a deck 17 ft wide.

Who owns Nfa A073 over Lackey Creek?

It is owned by the County Highway Agency.