US Bridges

Nfa A050 over Nfa A050/SR 20

Fair

Madison County, Tennessee · In Jackson City Limits · Structure no. 57SR0200015

Built
1991
34 years old
Condition
Fair
inspected May 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
216 ft
2 main spans
Daily traffic
4,640
2020 count
Owner
State
State Highway Agency

About this bridge

Nfa A050 over Nfa A050/SR 20 is a prestressed concrete continuous box beam or girders - single or spread carrying Nfa A050 over Nfa A050/SR 20 in Madison County, Tennessee. It was built in 1991, so it is 34 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 4,640 vehicles a day, roughly 7% of them trucks, projected to reach 7,424 by 2041. The structure is 216 ft (65.8 m) long and 58 ft wide. If it were closed, the detour would be 36 mi (58 km).

Location

Open in Google Maps
CarriesNfa A050
CrossesNfa A050/SR 20
LocationIn Jackson City Limits
RouteCity Street 50
CountyMadison County
StateTennessee
Coordinates35.66544, -88.88164
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.1 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length216 ft (65.8 m)
Longest span108 ft (32.9 m)
Deck width58 ft (17.6 m)
Roadway width56 ft (17 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,640 (2020)
Projected traffic7,424 by 2041
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed36 mi (58 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nfa A050 over Nfa A050/SR 20 built?

It was built in 1991, making it 34 years old in 2025.

What condition is Nfa A050 over Nfa A050/SR 20 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 May 2023.

How much traffic does Nfa A050 over Nfa A050/SR 20 carry?

About 4,640 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is Nfa A050 over Nfa A050/SR 20?

The structure is 216 ft (65.8 m) long with a longest span of 108 ft (32.9 m) and a deck 58 ft wide.

Who owns Nfa A050 over Nfa A050/SR 20?

It is owned by the State Highway Agency.