US Bridges

Nfa A139 over East Rock Creek

Fair

Marshall County, Tennessee · 2.5 MI SE JCT SR11&SR64 · Structure no. 590A1390001

Built
1996
29 years old
Condition
Fair
inspected August 2024
Type
Culvert
Concrete Continuous
Length
51 ft
3 main spans
Daily traffic
50
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A139 over East Rock Creek is a concrete continuous culvert carrying Nfa A139 over East Rock Creek in Marshall County, Tennessee. It was built in 1996, so it is 29 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 50 vehicles a day, roughly 1% of them trucks, projected to reach 80 by 2041. The structure is 51 ft (15.4 m) long and 28 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesNfa A139
CrossesEast Rock Creek
Location2.5 MI SE JCT SR11&SR64
RouteCounty Highway 139
CountyMarshall County
StateTennessee
Coordinates35.48082, -86.68004
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length51 ft (15.4 m)
Longest span14 ft (4.3 m)
Deck width28 ft (8.4 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2020)
Projected traffic80 by 2041
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 A139 over East Rock Creek built?

It was built in 1996, making it 29 years old in 2025.

What condition is Nfa A139 over East 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 A139 over East Rock Creek carry?

About 50 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Nfa A139 over East Rock Creek?

The structure is 51 ft (15.4 m) long with a longest span of 14 ft (4.3 m) and a deck 28 ft wide.

Who owns Nfa A139 over East Rock Creek?

It is owned by the County Highway Agency.