US Bridges

Hardbarger RD./636 over Mill Creek

Fair

Botetourt County, Virginia · 1.40-RTE640; 0.05-RTE11 · Structure no. 000000000003422

Built
1974
51 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
126 ft
3 main spans
Daily traffic
551
2016 count
Owner
State
State Highway Agency

About this bridge

Hardbarger RD./636 over Mill Creek is a steel stringer/multi-beam or girder carrying Hardbarger RD./636 over Mill Creek in Botetourt County, Virginia. It was built in 1974, so it is 51 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 551 vehicles a day, projected to reach 574 by 2042. The structure is 126 ft (38.4 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesHardbarger RD./636
CrossesMill Creek
Location1.40-RTE640; 0.05-RTE11
RouteCounty Highway 636
CountyBotetourt County
StateVirginia
Coordinates37.49738, -79.75743
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80 US tons
Inventory rating61 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length126 ft (38.4 m)
Longest span42 ft (12.8 m)
Deck width30 ft (9.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic551 (2016)
Projected traffic574 by 2042
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$645 million (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Hardbarger RD./636 over Mill Creek built?

It was built in 1974, making it 51 years old in 2025.

What condition is Hardbarger RD./636 over Mill 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 July 2024.

How much traffic does Hardbarger RD./636 over Mill Creek carry?

About 551 vehicles per day (2016 count).

How long is Hardbarger RD./636 over Mill Creek?

The structure is 126 ft (38.4 m) long with a longest span of 42 ft (12.8 m) and a deck 30 ft wide.

Who owns Hardbarger RD./636 over Mill Creek?

It is owned by the State Highway Agency.