US Bridges

Nfa A177 over Duck River

FairPosted for load

Maury County, Tennessee · 10 M. E. Columbia. · Structure no. 600A1770003

Built
1962
63 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
336 ft
2 main spans
Daily traffic
130
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A177 over Duck River is a steel continuous stringer/multi-beam or girder carrying Nfa A177 over Duck River in Maury County, Tennessee. It was built in 1962, so it is 63 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 130 vehicles a day, roughly 2% of them trucks, projected to reach 208 by 2041. The structure is 336 ft (102.4 m) long and 24 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesNfa A177
CrossesDuck River
Location10 M. E. Columbia.
RouteCounty Highway 177
CountyMaury County
StateTennessee
Coordinates35.61763, -86.8659
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.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourCountermeasures installed to correct a previously existing problem
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating20.8 US tons
Inventory rating17.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+4 approach)
Design loadH 15
Structure length336 ft (102.4 m)
Longest span96 ft (29.3 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic130 (2020)
Projected traffic208 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$964,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A177 over Duck River built?

It was built in 1962, making it 63 years old in 2025.

What condition is Nfa A177 over Duck River 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 May 2024.

How much traffic does Nfa A177 over Duck River carry?

About 130 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A177 over Duck River?

The structure is 336 ft (102.4 m) long with a longest span of 96 ft (29.3 m) and a deck 24 ft wide.

Who owns Nfa A177 over Duck River?

It is owned by the County Highway Agency.