US Bridges

Nfa B485 over Paw Paw Creek

Good

Roane County, Tennessee · S of I40 on Loudon CO LN · Structure no. 730A2340001

Built
2000
25 years old
Condition
Good
inspected March 2023
Type
Culvert
Concrete
Length
28 ft
1 main span
Daily traffic
480
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa B485 over Paw Paw Creek is a concrete culvert carrying Nfa B485 over Paw Paw Creek in Roane County, Tennessee. It was built in 2000, so it is 25 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 480 vehicles a day, roughly 2% of them trucks, projected to reach 768 by 2041. The structure is 28 ft (8.5 m) long and 34 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesNfa B485
CrossesPaw Paw Creek
LocationS of I40 on Loudon CO LN
RouteCounty Highway 485
CountyRoane County
StateTennessee
Coordinates35.85677, -84.3395
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span24 ft (7.3 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic480 (2020)
Projected traffic768 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa B485 over Paw Paw Creek built?

It was built in 2000, making it 25 years old in 2025.

What condition is Nfa B485 over Paw Paw 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 B485 over Paw Paw Creek carry?

About 480 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa B485 over Paw Paw Creek?

The structure is 28 ft (8.5 m) long with a longest span of 24 ft (7.3 m) and a deck 34 ft wide.

Who owns Nfa B485 over Paw Paw Creek?

It is owned by the County Highway Agency.