US Bridges

Nfa A378 over First Creek

Fair

Obion County, Tennessee · In Union City · Structure no. 660A3780001

Built
2008
17 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete Continuous
Length
35 ft
2 main spans
Daily traffic
1,040
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa A378 over First Creek is a concrete continuous culvert carrying Nfa A378 over First Creek in Obion County, Tennessee. It was built in 2008, so it is 17 years old, younger 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.

It carries about 1,040 vehicles a day, roughly 4% of them trucks, projected to reach 1,664 by 2041. The structure is 35 ft (10.7 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa A378
CrossesFirst Creek
LocationIn Union City
RouteCity Street 378
CountyObion County
StateTennessee
Coordinates36.43319, -89.06164
Functional classUrban 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length35 ft (10.7 m)
Longest span16 ft (4.9 m)
Deck width30 ft (9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,040 (2020)
Projected traffic1,664 by 2041
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A378 over First Creek built?

It was built in 2008, making it 17 years old in 2025.

What condition is Nfa A378 over First 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 March 2023.

How much traffic does Nfa A378 over First Creek carry?

About 1,040 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is Nfa A378 over First Creek?

The structure is 35 ft (10.7 m) long with a longest span of 16 ft (4.9 m) and a deck 30 ft wide.

Who owns Nfa A378 over First Creek?

It is owned by the City or Municipal Highway Agency.