US Bridges

Nbl COLLECTOR/I81 over Rte. 460_BYPASS

Fair

Montgomery County, Virginia · 1.00-RT11/460; 3.09-RT 8 · Structure no. 000000000025416

Built
1999
26 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
184 ft
2 main spans
Daily traffic
5,841
2022 count
Owner
State
State Highway Agency

About this bridge

Nbl COLLECTOR/I81 over Rte. 460_BYPASS is a prestressed concrete continuous stringer/multi-beam or girder carrying Nbl COLLECTOR/I81 over Rte. 460_BYPASS 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 fair condition with a lowest component rating of 5 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 5,841 vehicles a day, roughly 14% of them trucks, projected to reach 6,514 by 2045. The structure is 184 ft (56 m) long and 54 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNbl COLLECTOR/I81
CrossesRte. 460_BYPASS
Location1.00-RT11/460; 3.09-RT 8
RouteInterstate 81
CountyMontgomery County
StateVirginia
Coordinates37.12873, -80.37036
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82 US tons
Inventory rating63.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length184 ft (56 m)
Longest span92 ft (28 m)
Deck width54 ft (16.6 m)
Roadway width51 ft (15.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,841 (2022)
Projected traffic6,514 by 2045
Trucks14%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
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/I81 over Rte. 460_BYPASS built?

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

What condition is Nbl COLLECTOR/I81 over Rte. 460_BYPASS 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 April 2023.

How much traffic does Nbl COLLECTOR/I81 over Rte. 460_BYPASS carry?

About 5,841 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is Nbl COLLECTOR/I81 over Rte. 460_BYPASS?

The structure is 184 ft (56 m) long with a longest span of 92 ft (28 m) and a deck 54 ft wide.

Who owns Nbl COLLECTOR/I81 over Rte. 460_BYPASS?

It is owned by the State Highway Agency.