US Bridges

Poor Mtn. RD./612 over Br Roanoke River

Good

Roanoke County, Virginia · 4.55-RTE916; 0.55-RTE639 · Structure no. 000000000014984

Built
1951
74 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
25 ft
1 main span
Daily traffic
320
2018 count
Owner
State
State Highway Agency

About this bridge

Poor Mtn. RD./612 over Br Roanoke River is a steel stringer/multi-beam or girder carrying Poor Mtn. RD./612 over Br Roanoke River in Roanoke County, Virginia. It was built in 1951, so it is 74 years old, older 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 320 vehicles a day, projected to reach 385 by 2045. The structure is 25 ft (7.6 m) long and 21 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesPoor Mtn. RD./612
CrossesBr Roanoke River
Location4.55-RTE916; 0.55-RTE639
RouteCounty Highway 612
CountyRoanoke County
StateVirginia
Coordinates37.23419, -80.13338
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating86 US tons
Inventory rating66 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadHS 20 + Mod
Structure length25 ft (7.6 m)
Longest span25 ft (7.6 m)
Deck width21 ft (6.4 m)
Roadway width20 ft (6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic320 (2018)
Projected traffic385 by 2045
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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$301.6 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Poor Mtn. RD./612 over Br Roanoke River built?

It was built in 1951, making it 74 years old in 2025.

What condition is Poor Mtn. RD./612 over Br Roanoke 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 August 2023.

How much traffic does Poor Mtn. RD./612 over Br Roanoke River carry?

About 320 vehicles per day (2018 count).

How long is Poor Mtn. RD./612 over Br Roanoke River?

The structure is 25 ft (7.6 m) long with a longest span of 25 ft (7.6 m) and a deck 21 ft wide.

Who owns Poor Mtn. RD./612 over Br Roanoke River?

It is owned by the State Highway Agency.