US Bridges

Nfa B474 over East Fork Poplar Creek

Good

Roane County, Tennessee · 0.2 Mile NW of SR95 · Structure no. 730X0010003

Built
1999
26 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
133 ft
1 main span
Daily traffic
690
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa B474 over East Fork Poplar Creek is a prestressed concrete stringer/multi-beam or girder carrying Nfa B474 over East Fork Poplar Creek in Roane County, Tennessee. It was built in 1999, so it is 26 years old, younger than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 690 vehicles a day, roughly 2% of them trucks, projected to reach 1,104 by 2042. The structure is 133 ft (40.5 m) long and 72 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesNfa B474
CrossesEast Fork Poplar Creek
Location0.2 Mile NW of SR95
RouteCounty Highway 474
Coordinates35.96408, -84.35973
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length133 ft (40.5 m)
Longest span127 ft (38.7 m)
Deck width72 ft (21.9 m)
Roadway width60 ft (18.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic690 (2020)
Projected traffic1,104 by 2042
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa B474 over East Fork Poplar Creek built?

It was built in 1999, making it 26 years old in 2025.

What condition is Nfa B474 over East Fork Poplar Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2023.

How much traffic does Nfa B474 over East Fork Poplar Creek carry?

About 690 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa B474 over East Fork Poplar Creek?

The structure is 133 ft (40.5 m) long with a longest span of 127 ft (38.7 m) and a deck 72 ft wide.

Who owns Nfa B474 over East Fork Poplar Creek?

It is owned by the City or Municipal Highway Agency.