US Bridges

81 Nbl over 11/460 Roanoke RD

Good

Montgomery County, Virginia · 4.06 Rt 8 / 11.90 Roanoke · Structure no. 000000000025415

Built
2001
24 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
229 ft
2 main spans
Daily traffic
27,266
2022 count
Owner
State
State Highway Agency

About this bridge

81 Nbl over 11/460 Roanoke RD is a steel continuous stringer/multi-beam or girder carrying 81 Nbl over 11/460 Roanoke RD in Montgomery County, Virginia. It was built in 2001, so it is 24 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 27,266 vehicles a day, roughly 1% of them trucks, projected to reach 29,264 by 2045. The structure is 229 ft (69.9 m) long and 68 ft wide.

Carries81 Nbl
Crosses11/460 Roanoke RD
Location4.06 Rt 8 / 11.90 Roanoke
RouteInterstate 81
Coordinates37.13721, -80.35643
Functional classUrban Principal Arterial - Interstate

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating45 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length229 ft (69.9 m)
Longest span119 ft (36.4 m)
Deck width68 ft (20.6 m)
Roadway width65 ft (19.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27,266 (2022)
Projected traffic29,264 by 2045
Trucks1%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was 81 Nbl over 11/460 Roanoke RD built?

It was built in 2001, making it 24 years old in 2025.

What condition is 81 Nbl over 11/460 Roanoke RD 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 July 2023.

How much traffic does 81 Nbl over 11/460 Roanoke RD carry?

About 27,266 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is 81 Nbl over 11/460 Roanoke RD?

The structure is 229 ft (69.9 m) long with a longest span of 119 ft (36.4 m) and a deck 68 ft wide.

Who owns 81 Nbl over 11/460 Roanoke RD?

It is owned by the State Highway Agency.