US Bridges

Nfa B648 over Sulpher Fork Creek

Fair

Montgomery County, Tennessee · 12 M. E. Clarksville. · Structure no. 630A4560001

Built
1990
35 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
215 ft
4 main spans
Daily traffic
130
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa B648 over Sulpher Fork Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying Nfa B648 over Sulpher Fork Creek in Montgomery 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 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 130 vehicles a day, roughly 2% of them trucks, projected to reach 208 by 2042. The structure is 215 ft (65.5 m) long and 24 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa B648
CrossesSulpher Fork Creek
Location12 M. E. Clarksville.
RouteCounty Highway 648
CountyMontgomery County
StateTennessee
Coordinates36.55314, -87.13966
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.9 US tons
Inventory rating44.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, precast panels
Main spans4
Design loadHS 20
Structure length215 ft (65.5 m)
Longest span66 ft (20.1 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic130 (2020)
Projected traffic208 by 2042
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 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 B648 over Sulpher Fork Creek built?

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

What condition is Nfa B648 over Sulpher Fork 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 October 2024.

How much traffic does Nfa B648 over Sulpher Fork Creek carry?

About 130 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa B648 over Sulpher Fork Creek?

The structure is 215 ft (65.5 m) long with a longest span of 66 ft (20.1 m) and a deck 24 ft wide.

Who owns Nfa B648 over Sulpher Fork Creek?

It is owned by the County Highway Agency.