US Bridges

Nfa 1076 (sa 4601) over Roan Creek

FairPosted for load

Johnson County, Tennessee · Doe CR RD S Off SR167 · Structure no. 46S25760001

Built
1949
76 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
445 ft
6 main spans
Daily traffic
550
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1076 (sa 4601) over Roan Creek is a steel stringer/multi-beam or girder carrying Nfa 1076 (sa 4601) over Roan Creek in Johnson County, Tennessee. It was built in 1949, so it is 76 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 550 vehicles a day, roughly 3% of them trucks, projected to reach 880 by 2042. The structure is 445 ft (135.5 m) long and 21 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesNfa 1076 (sa 4601)
CrossesRoan Creek
LocationDoe CR RD S Off SR167
RouteCounty Highway 1076
CountyJohnson County
StateTennessee
Coordinates36.37445, -81.93784
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating15.8 US tons
Inventory rating12.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans6
Design loadH 15
Structure length445 ft (135.5 m)
Longest span60 ft (18.4 m)
Deck width21 ft (6.5 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic550 (2021)
Projected traffic880 by 2042
Trucks3%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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$1.1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1076 (sa 4601) over Roan Creek built?

It was built in 1949, making it 76 years old in 2025.

What condition is Nfa 1076 (sa 4601) over Roan 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 2024.

How much traffic does Nfa 1076 (sa 4601) over Roan Creek carry?

About 550 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1076 (sa 4601) over Roan Creek?

The structure is 445 ft (135.5 m) long with a longest span of 60 ft (18.4 m) and a deck 21 ft wide.

Who owns Nfa 1076 (sa 4601) over Roan Creek?

It is owned by the County Highway Agency.