US Bridges

Poor Mtn. RD./612 over Branch Roanoke River

Fair

Roanoke County, Virginia · 0.70-RT639S; 0.30-RT639N · Structure no. 000000000014982

Built
1949
76 years old
Condition
Fair
inspected October 2024
Type
Box Beam or Girders - Multiple
Concrete
Length
25 ft
1 main span
Daily traffic
715
2018 count
Owner
State
State Highway Agency

About this bridge

Poor Mtn. RD./612 over Branch Roanoke River is a concrete box beam or girders - multiple carrying Poor Mtn. RD./612 over Branch Roanoke River in Roanoke County, Virginia. It was built in 1949, so it is 76 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 715 vehicles a day, projected to reach 1,430 by 2042. The structure is 25 ft (7.7 m) long and 21 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesPoor Mtn. RD./612
CrossesBranch Roanoke River
Location0.70-RT639S; 0.30-RT639N
RouteCounty Highway 612
CountyRoanoke County
StateVirginia
Coordinates37.2528, -80.1344
Functional classUrban 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 within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating72 US tons
Inventory rating56 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length25 ft (7.7 m)
Longest span25 ft (7.7 m)
Deck width21 ft (6.4 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic715 (2018)
Projected traffic1,430 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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$3 million (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

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

It was built in 1949, making it 76 years old in 2025.

What condition is Poor Mtn. RD./612 over Branch 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 October 2024.

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

About 715 vehicles per day (2018 count).

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

The structure is 25 ft (7.7 m) long with a longest span of 25 ft (7.7 m) and a deck 21 ft wide.

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

It is owned by the State Highway Agency.