US Bridges

FAP 78 over Drainage Canal

Fair

Dyer County, Tennessee · .7 Mile North of Bogota · Structure no. 23SR0780005

Built
1926
99 years old
Condition
Fair
inspected October 2023
Type
Mixed Types
Concrete
Length
34 ft
1 main span
Daily traffic
3,574
2021 count
Owner
State
State Highway Agency

About this bridge

FAP 78 over Drainage Canal is a concrete mixed types carrying FAP 78 over Drainage Canal in Dyer County, Tennessee. It was built in 1926, so it is 99 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.

It carries about 3,574 vehicles a day, roughly 5% of them trucks, projected to reach 5,221 by 2042. The structure is 34 ft (10.4 m) long and 35 ft wide. If it were closed, the detour would be 73.9 mi (119 km).

Location

Open in Google Maps
CarriesFAP 78
CrossesDrainage Canal
Location.7 Mile North of Bogota
RouteState Highway 78
CountyDyer County
StateTennessee
Coordinates36.17486, -89.44411
Functional classRural Minor Arterial

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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeMixed Types
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span34 ft (10.4 m)
Deck width35 ft (10.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,574 (2021)
Projected traffic5,221 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed73.9 mi (119 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$127,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FAP 78 over Drainage Canal built?

It was built in 1926, making it 99 years old in 2025.

What condition is FAP 78 over Drainage Canal 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 FAP 78 over Drainage Canal carry?

About 3,574 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is FAP 78 over Drainage Canal?

The structure is 34 ft (10.4 m) long with a longest span of 34 ft (10.4 m) and a deck 35 ft wide.

Who owns FAP 78 over Drainage Canal?

It is owned by the State Highway Agency.