US Bridges

Nfa A390 over Little Blue Water Creek

FairPosted for load

Lawrence County, Tennessee · 3.5 M. Sw. Loretto- · Structure no. 500A3900001

Built
1926
99 years old, rebuilt 1960
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
34 ft
1 main span
Daily traffic
80
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa A390 over Little Blue Water Creek is a steel stringer/multi-beam or girder carrying Nfa A390 over Little Blue Water Creek in Lawrence County, Tennessee. It was built in 1926 and reconstructed in 1960, 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 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 80 vehicles a day, roughly 2% of them trucks, projected to reach 128 by 2041. The structure is 34 ft (10.5 m) long and 22 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesNfa A390
CrossesLittle Blue Water Creek
Location3.5 M. Sw. Loretto-
RouteCity Street 390
Coordinates35.03398, -87.49966
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.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
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
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25.8 US tons
Inventory rating17.9 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length34 ft (10.5 m)
Longest span33 ft (10.1 m)
Deck width22 ft (6.7 m)
Roadway width21 ft (6.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic80 (2020)
Projected traffic128 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$232,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A390 over Little Blue Water Creek built?

It was built in 1926, making it 99 years old in 2025. It was reconstructed in 1960.

What condition is Nfa A390 over Little Blue Water 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 May 2023.

How much traffic does Nfa A390 over Little Blue Water Creek carry?

About 80 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A390 over Little Blue Water Creek?

The structure is 34 ft (10.5 m) long with a longest span of 33 ft (10.1 m) and a deck 22 ft wide.

Who owns Nfa A390 over Little Blue Water Creek?

It is owned by the City or Municipal Highway Agency.