US Bridges

Nfa B350 over Vernon Creek

Good

Montgomery County, Tennessee · 2 M. E. Palmyra. · Structure no. 63SR1490007

Built
1989
36 years old
Condition
Good
inspected November 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
108 ft
3 main spans
Daily traffic
260
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa B350 over Vernon Creek is a prestressed concrete continuous box beam or girders - single or spread carrying Nfa B350 over Vernon Creek in Montgomery County, Tennessee. It was built in 1989, so it is 36 years old, younger than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 260 vehicles a day, roughly 2% of them trucks, projected to reach 416 by 2042. The structure is 108 ft (32.9 m) long and 28 ft wide. If it were closed, the detour would be 46 mi (74 km).

CarriesNfa B350
CrossesVernon Creek
Location2 M. E. Palmyra.
RouteCounty Highway 350
Coordinates36.44539, -87.44435
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.7 US tons
Inventory rating42.1 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length108 ft (32.9 m)
Longest span36 ft (11 m)
Deck width28 ft (8.6 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic260 (2020)
Projected traffic416 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed46 mi (74 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa B350 over Vernon Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is Nfa B350 over Vernon Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2024.

How much traffic does Nfa B350 over Vernon Creek carry?

About 260 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa B350 over Vernon Creek?

The structure is 108 ft (32.9 m) long with a longest span of 36 ft (11 m) and a deck 28 ft wide.

Who owns Nfa B350 over Vernon Creek?

It is owned by the County Highway Agency.