US Bridges

Nfa A663 over Richland Creek

Fair

Grainger County, Tennessee · SE Off US 11W-N of Blaine · Structure no. 290A5200001

Built
1987
38 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete Continuous
Length
64 ft
3 main spans
Daily traffic
80
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A663 over Richland Creek is a concrete continuous culvert carrying Nfa A663 over Richland Creek in Grainger County, Tennessee. It was built in 1987, so it is 38 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 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 80 vehicles a day, roughly 2% of them trucks, projected to reach 128 by 2041. The structure is 64 ft (19.5 m) long and 26 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesNfa A663
CrossesRichland Creek
LocationSE Off US 11W-N of Blaine
RouteCounty Highway 663
CountyGrainger County
StateTennessee
Coordinates36.2119, -83.64806
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 protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating98.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length64 ft (19.5 m)
Longest span15 ft (4.6 m)
Deck width26 ft (7.9 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic80 (2020)
Projected traffic128 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 A663 over Richland Creek built?

It was built in 1987, making it 38 years old in 2025.

What condition is Nfa A663 over Richland Creek 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 April 2023.

How much traffic does Nfa A663 over Richland Creek carry?

About 80 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A663 over Richland Creek?

The structure is 64 ft (19.5 m) long with a longest span of 15 ft (4.6 m) and a deck 26 ft wide.

Who owns Nfa A663 over Richland Creek?

It is owned by the County Highway Agency.