US Bridges

Nfa A342 over Little Emory River

Fair

Morgan County, Tennessee · NE Off US27 near Roane CO · Structure no. 650A3420001

Built
1984
41 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
103 ft
3 main spans
Daily traffic
160
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A342 over Little Emory River is a prestressed concrete continuous stringer/multi-beam or girder carrying Nfa A342 over Little Emory River in Morgan County, Tennessee. It was built in 1984, so it is 41 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 160 vehicles a day, roughly 2% of them trucks, projected to reach 256 by 2041. The structure is 103 ft (31.4 m) long and 26 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesNfa A342
CrossesLittle Emory River
LocationNE Off US27 near Roane CO
RouteCounty Highway 342
CountyMorgan County
StateTennessee
Coordinates35.99543, -84.47678
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating73.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length103 ft (31.4 m)
Longest span34 ft (10.4 m)
Deck width26 ft (7.9 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic160 (2020)
Projected traffic256 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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$199,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A342 over Little Emory River built?

It was built in 1984, making it 41 years old in 2025.

What condition is Nfa A342 over Little Emory 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 March 2023.

How much traffic does Nfa A342 over Little Emory River carry?

About 160 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A342 over Little Emory River?

The structure is 103 ft (31.4 m) long with a longest span of 34 ft (10.4 m) and a deck 26 ft wide.

Who owns Nfa A342 over Little Emory River?

It is owned by the County Highway Agency.