US Bridges

FAP 49 over Erin Branch

Fair

Houston County, Tennessee · In Erin City Limits · Structure no. 42SR0490001

Built
1941
84 years old, rebuilt 2009
Condition
Fair
inspected December 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
209 ft
5 main spans
Daily traffic
5,372
2021 count
Owner
State
State Highway Agency

About this bridge

FAP 49 over Erin Branch is a prestressed concrete continuous box beam or girders - single or spread carrying FAP 49 over Erin Branch in Houston County, Tennessee. It was built in 1941 and reconstructed in 2009, so it is 84 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 5 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 5,372 vehicles a day, roughly 5% of them trucks, projected to reach 8,306 by 2042. The structure is 209 ft (63.7 m) long and 30 ft wide. If it were closed, the detour would be 44.7 mi (72 km).

Location

Open in Google Maps
CarriesFAP 49
CrossesErin Branch
LocationIn Erin City Limits
RouteState Highway 49
CountyHouston County
StateTennessee
Coordinates36.32084, -87.68372
Functional classRural Minor Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating68.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length209 ft (63.7 m)
Longest span43 ft (13.1 m)
Deck width30 ft (9.2 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,372 (2021)
Projected traffic8,306 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed44.7 mi (72 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FAP 49 over Erin Branch built?

It was built in 1941, making it 84 years old in 2025. It was reconstructed in 2009.

What condition is FAP 49 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 December 2023.

How much traffic does FAP 49 over Erin Branch carry?

About 5,372 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is FAP 49 over Erin Branch?

The structure is 209 ft (63.7 m) long with a longest span of 43 ft (13.1 m) and a deck 30 ft wide.

Who owns FAP 49 over Erin Branch?

It is owned by the State Highway Agency.