US Bridges

BROOKRIDGERD/RT660 over Back Creek

Good

Roanoke County, Virginia · 0.60-RT617W; 0.70-RT617E · Structure no. 000000000015058

Built
1988
37 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
169 ft
3 main spans
Daily traffic
144
2018 count
Owner
State
State Highway Agency

About this bridge

BROOKRIDGERD/RT660 over Back Creek is a prestressed concrete stringer/multi-beam or girder carrying BROOKRIDGERD/RT660 over Back Creek in Roanoke County, Virginia. It was built in 1988, so it is 37 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 144 vehicles a day, projected to reach 168 by 2042. The structure is 169 ft (51.5 m) long and 29 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesBROOKRIDGERD/RT660
CrossesBack Creek
Location0.60-RT617W; 0.70-RT617E
RouteCounty Highway 660
Coordinates37.2278, -79.86862
Functional classUrban 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating92 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length169 ft (51.5 m)
Longest span65 ft (19.8 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic144 (2018)
Projected traffic168 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was BROOKRIDGERD/RT660 over Back Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is BROOKRIDGERD/RT660 over Back 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 June 2024.

How much traffic does BROOKRIDGERD/RT660 over Back Creek carry?

About 144 vehicles per day (2018 count).

How long is BROOKRIDGERD/RT660 over Back Creek?

The structure is 169 ft (51.5 m) long with a longest span of 65 ft (19.8 m) and a deck 29 ft wide.

Who owns BROOKRIDGERD/RT660 over Back Creek?

It is owned by the State Highway Agency.