US Bridges

Nfa A284 over Webb Branch

PoorPosted for load

Wilson County, Tennessee · 1.6 MI North of SR267 · Structure no. 950A2840003

Built
1960
65 years old
Condition
Poor
inspected May 2024
Type
Culvert
Concrete Continuous
Length
28 ft
2 main spans
Daily traffic
190
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A284 over Webb Branch is a concrete continuous culvert carrying Nfa A284 over Webb Branch in Wilson County, Tennessee. It was built in 1960, so it is 65 years old, older than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 190 vehicles a day, roughly 2% of them trucks, projected to reach 304 by 2042. The structure is 28 ft (8.5 m) long and 13 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesNfa A284
CrossesWebb Branch
Location1.6 MI North of SR267
RouteCounty Highway 0A284
CountyWilson County
StateTennessee
Coordinates36.04303, -86.09872
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating39.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length28 ft (8.5 m)
Longest span11 ft (3.4 m)
Deck width13 ft (4 m)
Roadway width12 ft (3.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic190 (2020)
Projected traffic304 by 2042
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-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$178,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A284 over Webb Branch built?

It was built in 1960, making it 65 years old in 2025.

What condition is Nfa A284 over Webb Branch in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2024.

How much traffic does Nfa A284 over Webb Branch carry?

About 190 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A284 over Webb Branch?

The structure is 28 ft (8.5 m) long with a longest span of 11 ft (3.4 m) and a deck 13 ft wide.

Who owns Nfa A284 over Webb Branch?

It is owned by the County Highway Agency.