US Bridges

Nfa A113 over Johnson Creek

Fair

Dickson County, Tennessee · 1 M. N. SR49. · Structure no. 220A2100001

Built
1950
75 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete Continuous
Length
30 ft
3 main spans
Daily traffic
140
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A113 over Johnson Creek is a concrete continuous culvert carrying Nfa A113 over Johnson Creek in Dickson County, Tennessee. It was built in 1950, so it is 75 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.

It carries about 140 vehicles a day, roughly 2% of them trucks, projected to reach 224 by 2040. The structure is 30 ft (9.1 m) long and 25 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa A113
CrossesJohnson Creek
Location1 M. N. SR49.
RouteCounty Highway 113
CountyDickson County
StateTennessee
Coordinates36.22938, -87.28212
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating53.6 US tons
Inventory rating31.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length30 ft (9.1 m)
Longest span8 ft (2.4 m)
Deck width25 ft (7.5 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic140 (2020)
Projected traffic224 by 2040
Trucks2%
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

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 A113 over Johnson Creek built?

It was built in 1950, making it 75 years old in 2025.

What condition is Nfa A113 over Johnson 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 June 2024.

How much traffic does Nfa A113 over Johnson Creek carry?

About 140 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A113 over Johnson Creek?

The structure is 30 ft (9.1 m) long with a longest span of 8 ft (2.4 m) and a deck 25 ft wide.

Who owns Nfa A113 over Johnson Creek?

It is owned by the County Highway Agency.