US Bridges

Nfa A656 over Simpson RD / I155

Fair

Dyer County, Tennessee · 2 MI E JCT I155 & SR 182 · Structure no. 23I01550017

Built
1979
46 years old
Condition
Fair
inspected October 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
266 ft
2 main spans
Daily traffic
130
2020 count
Owner
State
State Highway Agency

About this bridge

Nfa A656 over Simpson RD / I155 is a prestressed concrete continuous box beam or girders - single or spread carrying Nfa A656 over Simpson RD / I155 in Dyer County, Tennessee. It was built in 1979, so it is 46 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 6 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 130 vehicles a day, roughly 4% of them trucks, projected to reach 208 by 2042. The structure is 266 ft (81.1 m) long and 32 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesNfa A656
CrossesSimpson RD / I155
Location2 MI E JCT I155 & SR 182
RouteCounty Highway 656
CountyDyer County
StateTennessee
Coordinates36.07148, -89.46379
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length266 ft (81.1 m)
Longest span136 ft (41.5 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic130 (2020)
Projected traffic208 by 2042
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed11.2 mi (18 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nfa A656 over Simpson RD / I155 built?

It was built in 1979, making it 46 years old in 2025.

What condition is Nfa A656 over Simpson RD / I155 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 October 2023.

How much traffic does Nfa A656 over Simpson RD / I155 carry?

About 130 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is Nfa A656 over Simpson RD / I155?

The structure is 266 ft (81.1 m) long with a longest span of 136 ft (41.5 m) and a deck 32 ft wide.

Who owns Nfa A656 over Simpson RD / I155?

It is owned by the State Highway Agency.