US Bridges

Mt. Pleasant RD639 over S. Fork Roanoke River

Fair

Montgomery County, Virginia · 0.00-RT637; 2.00-RT722 · Structure no. 000000000012259

Built
1932
93 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
75 ft
2 main spans
Daily traffic
326
2020 count
Owner
State
State Highway Agency

About this bridge

Mt. Pleasant RD639 over S. Fork Roanoke River is a steel stringer/multi-beam or girder carrying Mt. Pleasant RD639 over S. Fork Roanoke River in Montgomery County, Virginia. It was built in 1932, so it is 93 years old, older than the Virginia average of 50.7 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 326 vehicles a day, projected to reach 340 by 2045. The structure is 75 ft (23 m) long and 22 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesMt. Pleasant RD639
CrossesS. Fork Roanoke River
Location0.00-RT637; 2.00-RT722
RouteCounty Highway 639
CountyMontgomery County
StateVirginia
Coordinates37.12387, -80.26828
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 protection7 GoodSome minor problems.
Last inspectionAugust 2023
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48 US tons
Inventory rating37 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length75 ft (23 m)
Longest span48 ft (14.5 m)
Deck width22 ft (6.8 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic326 (2020)
Projected traffic340 by 2045
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$110.7 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Mt. Pleasant RD639 over S. Fork Roanoke River built?

It was built in 1932, making it 93 years old in 2025.

What condition is Mt. Pleasant RD639 over S. Fork Roanoke River 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 2023.

How much traffic does Mt. Pleasant RD639 over S. Fork Roanoke River carry?

About 326 vehicles per day (2020 count).

How long is Mt. Pleasant RD639 over S. Fork Roanoke River?

The structure is 75 ft (23 m) long with a longest span of 48 ft (14.5 m) and a deck 22 ft wide.

Who owns Mt. Pleasant RD639 over S. Fork Roanoke River?

It is owned by the State Highway Agency.