US Bridges

Nfa A224 over Erin Branch

Fair

Houston County, Tennessee · E Maple ST in Erin · Structure no. 420A2240001

Built
2005
20 years old
Condition
Fair
inspected February 2024
Type
Culvert
Concrete Continuous
Length
45 ft
3 main spans
Daily traffic
330
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa A224 over Erin Branch is a concrete continuous culvert carrying Nfa A224 over Erin Branch in Houston County, Tennessee. It was built in 2005, so it is 20 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 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 330 vehicles a day, roughly 2% of them trucks, projected to reach 528 by 2042. The structure is 45 ft (13.6 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNfa A224
CrossesErin Branch
LocationE Maple ST in Erin
RouteCity Street 224
CountyHouston County
StateTennessee
Coordinates36.318, -87.69193
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating64.6 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length45 ft (13.6 m)
Longest span12 ft (3.7 m)
Deck width28 ft (8.4 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic330 (2020)
Projected traffic528 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$310,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A224 over Erin Branch built?

It was built in 2005, making it 20 years old in 2025.

What condition is Nfa A224 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 A224 over Erin Branch carry?

About 330 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A224 over Erin Branch?

The structure is 45 ft (13.6 m) long with a longest span of 12 ft (3.7 m) and a deck 28 ft wide.

Who owns Nfa A224 over Erin Branch?

It is owned by the City or Municipal Highway Agency.