US Bridges

Nfa 1777 over Lagoon Branch

Fair

Perry County, Tennessee · 1 M. Se. Lobelville. · Structure no. 68017770003

Built
1972
53 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete Continuous
Length
35 ft
2 main spans
Daily traffic
473
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1777 over Lagoon Branch is a concrete continuous culvert carrying Nfa 1777 over Lagoon Branch in Perry County, Tennessee. It was built in 1972, so it is 53 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 473 vehicles a day, roughly 3% of them trucks, projected to reach 688 by 2041. The structure is 35 ft (10.7 m) long and 23 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesNfa 1777
CrossesLagoon Branch
Location1 M. Se. Lobelville.
RouteCounty Highway 1777
CountyPerry County
StateTennessee
Coordinates35.74977, -87.7737
Functional classRural Minor 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 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 inspectionMarch 2023
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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating78.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length35 ft (10.7 m)
Longest span10 ft (3 m)
Deck width23 ft (7 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic473 (2021)
Projected traffic688 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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$136,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1777 over Lagoon Branch built?

It was built in 1972, making it 53 years old in 2025.

What condition is Nfa 1777 over Lagoon 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 March 2023.

How much traffic does Nfa 1777 over Lagoon Branch carry?

About 473 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1777 over Lagoon Branch?

The structure is 35 ft (10.7 m) long with a longest span of 10 ft (3 m) and a deck 23 ft wide.

Who owns Nfa 1777 over Lagoon Branch?

It is owned by the County Highway Agency.