US Bridges

I-81 NB on Ramp over Relief

Fair

Onondaga County, New York · I81 NB on Ramp; Viaduct · Structure no. 00000000103156C

Built
1966
59 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
454 ft
2 main spans
Daily traffic
17,378
2016 count
Owner
State
State Highway Agency

About this bridge

I-81 NB on Ramp over Relief is a steel stringer/multi-beam or girder carrying I-81 NB on Ramp over Relief in Onondaga County, New York. It was built in 1966, so it is 59 years old, older than the New York average of 53 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 17,378 vehicles a day, roughly 2% of them trucks, projected to reach 25,067 by 2041. The structure is 454 ft (138.4 m) long and 32 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesI-81 NB on Ramp
CrossesRelief
LocationI81 NB on Ramp; Viaduct
RouteInterstate 0
CountyOnondaga County
StateNew York
Coordinates43.0465, -76.14234
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating88.6 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2 (+6 approach)
Design loadHS 20
Structure length454 ft (138.4 m)
Longest span110 ft (33.5 m)
Deck width32 ft (9.7 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,378 (2016)
Projected traffic25,067 by 2041
Trucks2%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedDeck replacement with only incidental widening
Estimated improvement cost$4.7 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I-81 NB on Ramp over Relief built?

It was built in 1966, making it 59 years old in 2025.

What condition is I-81 NB on Ramp over Relief 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 September 2024.

How much traffic does I-81 NB on Ramp over Relief carry?

About 17,378 vehicles per day (2016 count), of which roughly 2% are trucks.

How long is I-81 NB on Ramp over Relief?

The structure is 454 ft (138.4 m) long with a longest span of 110 ft (33.5 m) and a deck 32 ft wide.

Who owns I-81 NB on Ramp over Relief?

It is owned by the State Highway Agency.