US Bridges

Nfa A350 over Rocky Ford Creek

Good

Montgomery County, Tennessee · 5.5 M. N. Cunningham. · Structure no. 630A3500001

Built
1986
39 years old
Condition
Good
inspected October 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
180
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A350 over Rocky Ford Creek is a prestressed concrete box beam or girders - single or spread carrying Nfa A350 over Rocky Ford Creek in Montgomery County, Tennessee. It was built in 1986, so it is 39 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 180 vehicles a day, roughly 2% of them trucks, projected to reach 288 by 2039. The structure is 60 ft (18.3 m) long and 29 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesNfa A350
CrossesRocky Ford Creek
Location5.5 M. N. Cunningham.
RouteCounty Highway 350
CountyMontgomery County
StateTennessee
Coordinates36.47032, -87.33598
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating71.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span59 ft (18 m)
Deck width29 ft (8.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic180 (2020)
Projected traffic288 by 2039
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 A350 over Rocky Ford Creek built?

It was built in 1986, making it 39 years old in 2025.

What condition is Nfa A350 over Rocky Ford Creek 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 October 2024.

How much traffic does Nfa A350 over Rocky Ford Creek carry?

About 180 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A350 over Rocky Ford Creek?

The structure is 60 ft (18.3 m) long with a longest span of 59 ft (18 m) and a deck 29 ft wide.

Who owns Nfa A350 over Rocky Ford Creek?

It is owned by the County Highway Agency.