US Bridges

Nfa A236 over Branch (mbsp)

Good

Dickson County, Tennessee · Montgomery Bell State Pk · Structure no. 22MBSP10001

Built
1990
35 years old
Condition
Good
inspected April 2024
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
150
2020 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

Nfa A236 over Branch (mbsp) is a concrete continuous culvert carrying Nfa A236 over Branch (mbsp) in Dickson County, Tennessee. It was built in 1990, so it is 35 years old, younger than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 150 vehicles a day, roughly 2% of them trucks, projected to reach 240 by 2040. The structure is 26 ft (7.9 m) long and 32 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesNfa A236
CrossesBranch (mbsp)
LocationMontgomery Bell State Pk
RouteCounty Highway 236
Coordinates36.10047, -87.28358
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating60.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span12 ft (3.7 m)
Deck width32 ft (9.8 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2020)
Projected traffic240 by 2040
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Park, Forest, or Reservation Agency
Maintained byState Park, Forest, or Reservation 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 A236 over Branch (mbsp) built?

It was built in 1990, making it 35 years old in 2025.

What condition is Nfa A236 over Branch (mbsp) in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2024.

How much traffic does Nfa A236 over Branch (mbsp) carry?

About 150 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A236 over Branch (mbsp)?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m) and a deck 32 ft wide.

Who owns Nfa A236 over Branch (mbsp)?

It is owned by the State Park, Forest, or Reservation Agency.