US Bridges

Plank Road over Flat Rock Creek

Good

Lunenburg County, Virginia · .11 FR 655 & 1.27 to 1129 · Structure no. 000000000011626

Built
1989
36 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
83 ft
1 main span
Daily traffic
1,267
2022 count
Owner
State
State Highway Agency

About this bridge

Plank Road over Flat Rock Creek is a steel stringer/multi-beam or girder carrying Plank Road over Flat Rock Creek in Lunenburg County, Virginia. It was built in 1989, so it is 36 years old, younger than the Virginia average of 50.7 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 1,267 vehicles a day, roughly 1% of them trucks, projected to reach 1,413 by 2045. The structure is 83 ft (25.3 m) long and 38 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

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CarriesPlank Road
CrossesFlat Rock Creek
Location.11 FR 655 & 1.27 to 1129
RouteCounty Highway 637
CountyLunenburg County
StateVirginia
Coordinates36.93788, -78.14518
Functional classRural Major Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
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 alignment8: Equal to present desirable criteria
Operating rating94 US tons
Inventory rating72 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length83 ft (25.3 m)
Longest span78 ft (23.7 m)
Deck width38 ft (11.6 m)
Roadway width34 ft (10.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,267 (2022)
Projected traffic1,413 by 2045
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$219.5 million (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Plank Road over Flat Rock Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is Plank Road over Flat Rock 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 June 2023.

How much traffic does Plank Road over Flat Rock Creek carry?

About 1,267 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Plank Road over Flat Rock Creek?

The structure is 83 ft (25.3 m) long with a longest span of 78 ft (23.7 m) and a deck 38 ft wide.

Who owns Plank Road over Flat Rock Creek?

It is owned by the State Highway Agency.