US Bridges

Nfa D976 over Roddy Creek

Good

Blount County, Tennessee · 3 M.N. Rockford. · Structure no. 050A3540001

Built
1935
90 years old
Condition
Good
inspected December 2023
Type
Culvert
Concrete Continuous
Length
23 ft
2 main spans
Daily traffic
750
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa D976 over Roddy Creek is a concrete continuous culvert carrying Nfa D976 over Roddy Creek in Blount County, Tennessee. It was built in 1935, so it is 90 years old, older 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 750 vehicles a day, roughly 2% of them trucks, projected to reach 1,200 by 2042. The structure is 23 ft (7 m) long and 25 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNfa D976
CrossesRoddy Creek
Location3 M.N. Rockford.
RouteCounty Highway 976
CountyBlount County
StateTennessee
Coordinates35.8508, -83.93615
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.6 US tons
Inventory rating31.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadUnknown
Structure length23 ft (7 m)
Longest span14 ft (4.3 m)
Deck width25 ft (7.5 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic750 (2020)
Projected traffic1,200 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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$91,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa D976 over Roddy Creek built?

It was built in 1935, making it 90 years old in 2025.

What condition is Nfa D976 over Roddy 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 December 2023.

How much traffic does Nfa D976 over Roddy Creek carry?

About 750 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa D976 over Roddy Creek?

The structure is 23 ft (7 m) long with a longest span of 14 ft (4.3 m) and a deck 25 ft wide.

Who owns Nfa D976 over Roddy Creek?

It is owned by the County Highway Agency.