US Bridges

Nfa A609 over Big Rock Creek

FairPosted for load

Marshall County, Tennessee · In Downtown Lewisburg · Structure no. 59M34450001

Built
1965
60 years old
Condition
Fair
inspected August 2024
Type
Tee Beam
Concrete Continuous
Length
120 ft
4 main spans
Daily traffic
2,370
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa A609 over Big Rock Creek is a concrete continuous tee beam carrying Nfa A609 over Big Rock Creek in Marshall County, Tennessee. It was built in 1965, so it is 60 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 2,370 vehicles a day, roughly 1% of them trucks, projected to reach 3,792 by 2041. The structure is 120 ft (36.6 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesNfa A609
CrossesBig Rock Creek
LocationIn Downtown Lewisburg
RouteCity Street 609
CountyMarshall County
StateTennessee
Coordinates35.44984, -86.78619
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating23.9 US tons
Inventory rating16.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length120 ft (36.6 m)
Longest span30 ft (9.2 m)
Deck width27 ft (8.3 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,370 (2020)
Projected traffic3,792 by 2041
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.7 million (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A609 over Big Rock Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is Nfa A609 over Big Rock 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 A609 over Big Rock Creek carry?

About 2,370 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Nfa A609 over Big Rock Creek?

The structure is 120 ft (36.6 m) long with a longest span of 30 ft (9.2 m) and a deck 27 ft wide.

Who owns Nfa A609 over Big Rock Creek?

It is owned by the City or Municipal Highway Agency.