US Bridges

Rockbridge RD./612 over Mill Creek

Good

Botetourt County, Virginia · 3.15-RKBR CO.;0.35-RTE622 · Structure no. 000000000025290

Built
1998
27 years old
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
42 ft
1 main span
Daily traffic
20
2019 count
Owner
State
State Highway Agency

About this bridge

Rockbridge RD./612 over Mill Creek is a steel stringer/multi-beam or girder carrying Rockbridge RD./612 over Mill Creek in Botetourt County, Virginia. It was built in 1998, so it is 27 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 20 vehicles a day, projected to reach 23 by 2042. The structure is 42 ft (12.8 m) long and 24 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

CarriesRockbridge RD./612
CrossesMill Creek
Location3.15-RKBR CO.;0.35-RTE622
RouteCounty Highway 612
Coordinates37.67699, -79.72255
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating96 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length42 ft (12.8 m)
Longest span35 ft (10.8 m)
Deck width24 ft (7.2 m)
Roadway width21 ft (6.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2019)
Projected traffic23 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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$128.3 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Rockbridge RD./612 over Mill Creek built?

It was built in 1998, making it 27 years old in 2025.

What condition is Rockbridge RD./612 over Mill 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 March 2024.

How much traffic does Rockbridge RD./612 over Mill Creek carry?

About 20 vehicles per day (2019 count).

How long is Rockbridge RD./612 over Mill Creek?

The structure is 42 ft (12.8 m) long with a longest span of 35 ft (10.8 m) and a deck 24 ft wide.

Who owns Rockbridge RD./612 over Mill Creek?

It is owned by the State Highway Agency.