US Bridges

Nfa 1621 over Mill Creek

FairPosted for load

Hardeman County, Tennessee · 2.5 MI SW of Toone · Structure no. 35016210001

Built
1971
54 years old
Condition
Fair
inspected August 2024
Type
Channel Beam
Concrete
Length
57 ft
3 main spans
Daily traffic
68
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1621 over Mill Creek is a concrete channel beam carrying Nfa 1621 over Mill Creek in Hardeman County, Tennessee. It was built in 1971, so it is 54 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 6 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 68 vehicles a day, roughly 3% of them trucks, projected to reach 160 by 2041. The structure is 57 ft (17.4 m) long and 22 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesNfa 1621
CrossesMill Creek
Location2.5 MI SW of Toone
RouteCounty Highway 1621
Coordinates35.32564, -88.98047
Functional classRural Minor Collector

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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating37.1 US tons
Inventory rating28.5 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadH 15
Structure length57 ft (17.4 m)
Longest span19 ft (5.8 m)
Deck width22 ft (6.6 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic68 (2021)
Projected traffic160 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1621 over Mill Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is Nfa 1621 over Mill Creek 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 August 2024.

How much traffic does Nfa 1621 over Mill Creek carry?

About 68 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1621 over Mill Creek?

The structure is 57 ft (17.4 m) long with a longest span of 19 ft (5.8 m) and a deck 22 ft wide.

Who owns Nfa 1621 over Mill Creek?

It is owned by the County Highway Agency.