FHWA Ditches I-81 Viaduct for Syracuse Street Grid
Published Date: 9/11/2026
Rule
Summary
This final rule makes the following changes to the National Network (NN) in Syracuse, New York: the de-designation of the segment of the NN from Interstate 81 (I-81) between the New York, Susquehanna, and Western Railway bridge and the I-81/I-690 interchange (I-81 Viaduct); and the addition to the NN of the signalized surface urban arterial roadway system (Community Grid) that replaces the I-81 Viaduct and is designated as part of Business Loop 81 (BL 81). The remainder of I-81 between the I-81/I-690 interchange and the I-81/I-481 interchange (Exit 29) will be reclassified as BL 81 and remain on the NN. Interstate 481 (I-481) will be reclassified as I-81 and will remain on the NN. This rule will become effective immediately.
Analyzed Economic Effects
1 provisions identified: 0 benefits, 0 costs, 1 mixed.
Syracuse I-81 National Network Redesignation
If you operate authorized commercial vehicles in Syracuse, NY, the National Network (NN) route designations change effective September 11, 2026. The segment of I-81 between the New York, Susquehanna, and Western Railway bridge and the I-81/I-690 interchange (the I-81 Viaduct) is de-designated from the NN; the signalized surface urban arterial Community Grid that replaces the Viaduct is added to the NN as Business Loop 81 (BL 81); the remainder of I-81 between the I-81/I-690 interchange and the I-81/I-481 interchange (Exit 29) is reclassified as BL 81 and stays on the NN; and I-481 is reclassified as I-81 and remains on the NN.
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Key Dates
Department and Agencies
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