US Bridges

Doe Run RD./646 over Pigg River

Good

Franklin County, Virginia · 0.75 Rt 829; 1.10 Rt 674 · Structure no. 000000000007879

Built
1986
39 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
212 ft
3 main spans
Daily traffic
285
2022 count
Owner
State
State Highway Agency

About this bridge

Doe Run RD./646 over Pigg River is a steel stringer/multi-beam or girder carrying Doe Run RD./646 over Pigg River in Franklin County, Virginia. It was built in 1986, so it is 39 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 285 vehicles a day, projected to reach 405 by 2042. The structure is 212 ft (64.6 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesDoe Run RD./646
CrossesPigg River
Location0.75 Rt 829; 1.10 Rt 674
RouteCounty Highway 646
Coordinates36.96107, -79.77078
Functional classRural Minor 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83 US tons
Inventory rating64 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length212 ft (64.6 m)
Longest span68 ft (20.8 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic285 (2022)
Projected traffic405 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Doe Run RD./646 over Pigg River built?

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

What condition is Doe Run RD./646 over Pigg River 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 July 2024.

How much traffic does Doe Run RD./646 over Pigg River carry?

About 285 vehicles per day (2022 count).

How long is Doe Run RD./646 over Pigg River?

The structure is 212 ft (64.6 m) long with a longest span of 68 ft (20.8 m) and a deck 30 ft wide.

Who owns Doe Run RD./646 over Pigg River?

It is owned by the State Highway Agency.