US Bridges

Nfa A555 over SR 26

FairPosted for load

DeKalb County, Tennessee · In the City of Smithville · Structure no. 21SR0260017

Built
1951
74 years old
Condition
Fair
inspected November 2023
Type
Tee Beam
Concrete
Length
141 ft
4 main spans
Daily traffic
1,061
2021 count
Owner
State
State Highway Agency

About this bridge

Nfa A555 over SR 26 is a concrete tee beam carrying Nfa A555 over SR 26 in DeKalb County, Tennessee. It was built in 1951, so it is 74 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 5 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 1,061 vehicles a day, roughly 3% of them trucks, projected to reach 1,698 by 2042. The structure is 141 ft (43 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNfa A555
CrossesSR 26
LocationIn the City of Smithville
RouteCity Street 555
CountyDeKalb County
StateTennessee
Coordinates35.95771, -85.8152
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.5 US tons
Inventory rating22.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length141 ft (43 m)
Longest span41 ft (12.5 m)
Deck width43 ft (13 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,061 (2021)
Projected traffic1,698 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.4 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nfa A555 over SR 26 built?

It was built in 1951, making it 74 years old in 2025.

What condition is Nfa A555 over SR 26 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 Nfa A555 over SR 26 carry?

About 1,061 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa A555 over SR 26?

The structure is 141 ft (43 m) long with a longest span of 41 ft (12.5 m) and a deck 43 ft wide.

Who owns Nfa A555 over SR 26?

It is owned by the State Highway Agency.