US Bridges

RTE I81 over E Calthrop Avenue

Fair

Onondaga County, New York · Exit 7 of I81 · Structure no. 000000001031529

Built
1965
60 years old, rebuilt 2013
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
146 ft
3 main spans
Daily traffic
33,598
2019 count
Owner
State
State Highway Agency

About this bridge

RTE I81 over E Calthrop Avenue is a steel stringer/multi-beam or girder carrying RTE I81 over E Calthrop Avenue in Onondaga County, New York. It was built in 1965 and reconstructed in 2013, so it is 60 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 33,598 vehicles a day, roughly 14% of them trucks, projected to reach 48,465 by 2041. The structure is 146 ft (44.5 m) long and 100 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesRTE I81
CrossesE Calthrop Avenue
LocationExit 7 of I81
RouteInterstate 81
CountyOnondaga County
StateNew York
Coordinates43.01663, -76.13998
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
Deck7 GoodSome minor problems.
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 inspectionSeptember 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 geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating95 US tons
Inventory rating57 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length146 ft (44.5 m)
Longest span65 ft (19.8 m)
Deck width100 ft (30.4 m)
Roadway width94 ft (28.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33,598 (2019)
Projected traffic48,465 by 2041
Trucks14%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$5.5 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was RTE I81 over E Calthrop Avenue built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 2013.

What condition is RTE I81 over E Calthrop Avenue 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 2023.

How much traffic does RTE I81 over E Calthrop Avenue carry?

About 33,598 vehicles per day (2019 count), of which roughly 14% are trucks.

How long is RTE I81 over E Calthrop Avenue?

The structure is 146 ft (44.5 m) long with a longest span of 65 ft (19.8 m) and a deck 100 ft wide.

Who owns RTE I81 over E Calthrop Avenue?

It is owned by the State Highway Agency.