US Bridges

Nfa A143 over Erin Branch

Fair

Houston County, Tennessee · Bwt-Main&maple St.In Erin · Structure no. 420A1430001

Built
1960
65 years old
Condition
Fair
inspected February 2024
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
170
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa A143 over Erin Branch is a concrete continuous culvert carrying Nfa A143 over Erin Branch in Houston 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 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 170 vehicles a day, roughly 2% of them trucks, projected to reach 272 by 2042. The structure is 25 ft (7.6 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNfa A143
CrossesErin Branch
LocationBwt-Main&maple St.In Erin
RouteCity Street 143
CountyHouston County
StateTennessee
Coordinates36.31918, -87.68751
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating39.7 US tons
Inventory rating24.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 10
Structure length25 ft (7.6 m)
Longest span12 ft (3.7 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic170 (2020)
Projected traffic272 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 A143 over Erin Branch built?

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

What condition is Nfa A143 over Erin 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 February 2024.

How much traffic does Nfa A143 over Erin Branch carry?

About 170 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A143 over Erin Branch?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m) and a deck 26 ft wide.

Who owns Nfa A143 over Erin Branch?

It is owned by the City or Municipal Highway Agency.