US Bridges

Nfa A330 over Ferguson Branch

Fair

McMinn County, Tennessee · .3MI East of SR33 · Structure no. 540A3300001

Built
1925
100 years old
Condition
Fair
inspected August 2023
Type
Tee Beam
Concrete
Length
27 ft
1 main span
Daily traffic
270
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A330 over Ferguson Branch is a concrete tee beam carrying Nfa A330 over Ferguson Branch in McMinn 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 6 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 270 vehicles a day, roughly 2% of them trucks, projected to reach 432 by 2042. The structure is 27 ft (8.2 m) long and 23 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesNfa A330
CrossesFerguson Branch
Location.3MI East of SR33
RouteCounty Highway 330
CountyMcMinn County
StateTennessee
Coordinates35.3885, -84.49216
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length27 ft (8.2 m)
Longest span21 ft (6.4 m)
Deck width23 ft (7.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic270 (2020)
Projected traffic432 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$97,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A330 over Ferguson Branch built?

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

What condition is Nfa A330 over Ferguson 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 August 2023.

How much traffic does Nfa A330 over Ferguson Branch carry?

About 270 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A330 over Ferguson Branch?

The structure is 27 ft (8.2 m) long with a longest span of 21 ft (6.4 m) and a deck 23 ft wide.

Who owns Nfa A330 over Ferguson Branch?

It is owned by the County Highway Agency.