US Bridges

Nfa A550 over Dixie Lee HWY / I-24 EB

Fair

Marion County, Tennessee · Monteagle · Structure no. 58I00240007

Built
1996
29 years old
Condition
Fair
inspected July 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
208 ft
3 main spans
Daily traffic
3,290
2020 count
Owner
State
State Highway Agency

About this bridge

Nfa A550 over Dixie Lee HWY / I-24 EB is a prestressed concrete continuous box beam or girders - single or spread carrying Nfa A550 over Dixie Lee HWY / I-24 EB in Marion County, Tennessee. It was built in 1996, so it is 29 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 3,290 vehicles a day, roughly 10% of them trucks, projected to reach 5,264 by 2040. The structure is 208 ft (63.5 m) long and 42 ft wide.

Location

Open in Google Maps
CarriesNfa A550
CrossesDixie Lee HWY / I-24 EB
LocationMonteagle
RouteCounty Highway 550
CountyMarion County
StateTennessee
Coordinates35.23084, -85.82708
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
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 geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length208 ft (63.5 m)
Longest span100 ft (30.5 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,290 (2020)
Projected traffic5,264 by 2040
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nfa A550 over Dixie Lee HWY / I-24 EB built?

It was built in 1996, making it 29 years old in 2025.

What condition is Nfa A550 over Dixie Lee HWY / I-24 EB 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 July 2024.

How much traffic does Nfa A550 over Dixie Lee HWY / I-24 EB carry?

About 3,290 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Nfa A550 over Dixie Lee HWY / I-24 EB?

The structure is 208 ft (63.5 m) long with a longest span of 100 ft (30.5 m) and a deck 42 ft wide.

Who owns Nfa A550 over Dixie Lee HWY / I-24 EB?

It is owned by the State Highway Agency.