US Bridges

FAS 20 over SR 20 / SR 104

Fair

Dyer County, Tennessee · 3.5 MI SE JCT SR3&SR78 · Structure no. 23SR0200031

Built
1986
39 years old
Condition
Fair
inspected November 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
198 ft
3 main spans
Daily traffic
11,746
2021 count
Owner
State
State Highway Agency

About this bridge

FAS 20 over SR 20 / SR 104 is a prestressed concrete continuous box beam or girders - single or spread carrying FAS 20 over SR 20 / SR 104 in Dyer County, Tennessee. It was built in 1986, so it is 39 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 11,746 vehicles a day, roughly 8% of them trucks, projected to reach 15,827 by 2042. The structure is 198 ft (60.5 m) long and 44 ft wide.

Location

Open in Google Maps
CarriesFAS 20
CrossesSR 20 / SR 104
Location3.5 MI SE JCT SR3&SR78
RouteState Highway 20
CountyDyer County
StateTennessee
Coordinates36.02559, -89.34064
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 inspectionNovember 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 geometry8: Equal to present desirable 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 length198 ft (60.5 m)
Longest span113 ft (34.3 m)
Deck width44 ft (13.4 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,746 (2021)
Projected traffic15,827 by 2042
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

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 FAS 20 over SR 20 / SR 104 built?

It was built in 1986, making it 39 years old in 2025.

What condition is FAS 20 over SR 20 / SR 104 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 November 2023.

How much traffic does FAS 20 over SR 20 / SR 104 carry?

About 11,746 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is FAS 20 over SR 20 / SR 104?

The structure is 198 ft (60.5 m) long with a longest span of 113 ft (34.3 m) and a deck 44 ft wide.

Who owns FAS 20 over SR 20 / SR 104?

It is owned by the State Highway Agency.