US Bridges

81 Nbl over RTE 606

Fair

Botetourt County, Virginia · 8.57 Rt 220; 0.81 Rt 11 · Structure no. 000000000003222

Built
1963
62 years old, rebuilt 1990
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
138 ft
3 main spans
Daily traffic
20,975
2022 count
Owner
State
State Highway Agency

About this bridge

81 Nbl over RTE 606 is a steel stringer/multi-beam or girder carrying 81 Nbl over RTE 606 in Botetourt County, Virginia. It was built in 1963 and reconstructed in 1990, so it is 62 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 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 20,975 vehicles a day, roughly 1% of them trucks, projected to reach 24,146 by 2042. The structure is 138 ft (42.2 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries81 Nbl
CrossesRTE 606
Location8.57 Rt 220; 0.81 Rt 11
RouteInterstate 81
CountyBotetourt County
StateVirginia
Coordinates37.47313, -79.80006
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating54 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length138 ft (42.2 m)
Longest span48 ft (14.7 m)
Deck width44 ft (13.5 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,975 (2022)
Projected traffic24,146 by 2042
Trucks1%
Lanes on structure2
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 81 Nbl over RTE 606 built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1990.

What condition is 81 Nbl over RTE 606 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 March 2024.

How much traffic does 81 Nbl over RTE 606 carry?

About 20,975 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is 81 Nbl over RTE 606?

The structure is 138 ft (42.2 m) long with a longest span of 48 ft (14.7 m) and a deck 44 ft wide.

Who owns 81 Nbl over RTE 606?

It is owned by the State Highway Agency.