US Bridges

Ramp a to I-81 Sbl over I-81

Fair

Wythe County, Virginia · 0.14M to 11; 0.39M to 81 · Structure no. 000000000019614

Built
1963
62 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
365 ft
4 main spans
Daily traffic
255
2022 count
Owner
State
State Highway Agency

About this bridge

Ramp a to I-81 Sbl over I-81 is a steel stringer/multi-beam or girder carrying Ramp a to I-81 Sbl over I-81 in Wythe County, Virginia. It was built in 1963, 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 255 vehicles a day, projected to reach 372 by 2045. The structure is 365 ft (111.1 m) long and 25 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

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CarriesRamp a to I-81 Sbl
CrossesI-81
Location0.14M to 11; 0.39M to 81
RouteInterstate 81
CountyWythe County
StateVirginia
Coordinates36.94058, -81.15225
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating67 US tons
Inventory rating51 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length365 ft (111.1 m)
Longest span104 ft (31.6 m)
Deck width25 ft (7.7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic255 (2022)
Projected traffic372 by 2045
Trucks0%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed5.6 mi (9 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$422.5 million (2019 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ramp a to I-81 Sbl over I-81 built?

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

What condition is Ramp a to I-81 Sbl over I-81 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 2023.

How much traffic does Ramp a to I-81 Sbl over I-81 carry?

About 255 vehicles per day (2022 count).

How long is Ramp a to I-81 Sbl over I-81?

The structure is 365 ft (111.1 m) long with a longest span of 104 ft (31.6 m) and a deck 25 ft wide.

Who owns Ramp a to I-81 Sbl over I-81?

It is owned by the State Highway Agency.