US Bridges

Nbl COLLECTOR/I-81 over Rte. 11 (460)

Good

Montgomery County, Virginia · 4.06-RT 8; 11.90- Roa CO · Structure no. 000000000025420

Built
1999
26 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
236 ft
2 main spans
Daily traffic
3,824
2022 count
Owner
State
State Highway Agency

About this bridge

Nbl COLLECTOR/I-81 over Rte. 11 (460) is a steel continuous stringer/multi-beam or girder carrying Nbl COLLECTOR/I-81 over Rte. 11 (460) in Montgomery County, Virginia. It was built in 1999, so it is 26 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 3,824 vehicles a day, roughly 13% of them trucks, projected to reach 4,265 by 2045. The structure is 236 ft (71.9 m) long and 54 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesNbl COLLECTOR/I-81
CrossesRte. 11 (460)
Location4.06-RT 8; 11.90- Roa CO
RouteInterstate 81
CountyMontgomery County
StateVirginia
Coordinates37.13726, -80.35616
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 rating52 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length236 ft (71.9 m)
Longest span126 ft (38.5 m)
Deck width54 ft (16.6 m)
Roadway width51 ft (15.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,824 (2022)
Projected traffic4,265 by 2045
Trucks13%
Lanes on structure3
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 Nbl COLLECTOR/I-81 over Rte. 11 (460) built?

It was built in 1999, making it 26 years old in 2025.

What condition is Nbl COLLECTOR/I-81 over Rte. 11 (460) 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 Nbl COLLECTOR/I-81 over Rte. 11 (460) carry?

About 3,824 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is Nbl COLLECTOR/I-81 over Rte. 11 (460)?

The structure is 236 ft (71.9 m) long with a longest span of 126 ft (38.5 m) and a deck 54 ft wide.

Who owns Nbl COLLECTOR/I-81 over Rte. 11 (460)?

It is owned by the State Highway Agency.