US Bridges

Old Mill RD/752 over Branch Back Creek

Fair

Roanoke County, Virginia · 0.40-RTE221; 0.52-RTE764 · Structure no. 000000000015102

Built
1938
87 years old, rebuilt 1999
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
28 ft
1 main span
Daily traffic
484
2018 count
Owner
State
State Highway Agency

About this bridge

Old Mill RD/752 over Branch Back Creek is a steel stringer/multi-beam or girder carrying Old Mill RD/752 over Branch Back Creek in Roanoke County, Virginia. It was built in 1938 and reconstructed in 1999, so it is 87 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 484 vehicles a day, projected to reach 658 by 2045. The structure is 28 ft (8.5 m) long and 20 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesOld Mill RD/752
CrossesBranch Back Creek
Location0.40-RTE221; 0.52-RTE764
RouteCounty Highway 752
CountyRoanoke County
StateVirginia
Coordinates37.19489, -80.06013
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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating99 US tons
Inventory rating91.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span28 ft (8.5 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic484 (2018)
Projected traffic658 by 2045
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$906 million (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Old Mill RD/752 over Branch Back Creek built?

It was built in 1938, making it 87 years old in 2025. It was reconstructed in 1999.

What condition is Old Mill RD/752 over Branch Back Creek 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 May 2023.

How much traffic does Old Mill RD/752 over Branch Back Creek carry?

About 484 vehicles per day (2018 count).

How long is Old Mill RD/752 over Branch Back Creek?

The structure is 28 ft (8.5 m) long with a longest span of 28 ft (8.5 m) and a deck 20 ft wide.

Who owns Old Mill RD/752 over Branch Back Creek?

It is owned by the State Highway Agency.