US Bridges

Nfa 1620 (sa 9222) over Blackamore Creek

Good

Weakley County, Tennessee · 2 MI S of Ky · Structure no. 92016200001

Built
1975
50 years old
Condition
Good
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
123 ft
3 main spans
Daily traffic
283
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1620 (sa 9222) over Blackamore Creek is a prestressed concrete continuous box beam or girders - multiple carrying Nfa 1620 (sa 9222) over Blackamore Creek in Weakley County, Tennessee. It was built in 1975, so it is 50 years old, older than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 283 vehicles a day, roughly 3% of them trucks, projected to reach 240 by 2040. The structure is 123 ft (37.5 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesNfa 1620 (sa 9222)
CrossesBlackamore Creek
Location2 MI S of Ky
RouteCounty Highway 1620
Coordinates36.48089, -88.66656
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than 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 alignment8: Equal to present desirable criteria
Operating rating66.5 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length123 ft (37.5 m)
Longest span40 ft (12.2 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic283 (2021)
Projected traffic240 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 1620 (sa 9222) over Blackamore Creek built?

It was built in 1975, making it 50 years old in 2025.

What condition is Nfa 1620 (sa 9222) over Blackamore Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.

How much traffic does Nfa 1620 (sa 9222) over Blackamore Creek carry?

About 283 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1620 (sa 9222) over Blackamore Creek?

The structure is 123 ft (37.5 m) long with a longest span of 40 ft (12.2 m) and a deck 30 ft wide.

Who owns Nfa 1620 (sa 9222) over Blackamore Creek?

It is owned by the County Highway Agency.