| Rank | Location | Estimated Volume | Total Delay (M/PY) |
|---|---|---|---|
| 1 | I-91 S @ US-5/EXIT 3 | 49,468 | 25,759,718 |
| 2 | MA-116 N @ I-91 (SPRINGFIELD) | 56,916 | 18,332,211 |
| 3 | I-91 N @ US-5/EXIT 18 | 28,040 | 10,891,050 |
| 4 | I-91 S @ US-5/EXIT 18 | 23,165 | 9,335,934 |
| 5 | ST JAMES AVE N @ BROADWAY ST | 38,041 | 5,766,891 |
| 6 | US-20 W @ NORTH END BRG | 16,472 | 4,836,141 |
| 7 | MA-9 W @ MA-116 | 13,352 | 4,236,402 |
| 8 | I-291 N @ I-90/MASSACHUSETTS TPKE/EXIT 7 | 24,702 | 4,212,494 |
| 9 | LIBERTY ST N @ MAIN ST | 48,492 | 3,741,339 |
| 10 | I-90 W @ US-202/MA-10/EXIT 3 | 24,483 | 3,556,588 |
| 11 | US-5 S @ BLISS RD/EMERSON RD | 15,749 | 3,340,868 |
| 12 | I-91 S @ MA-141/EXIT 17 | 27,500 | 3,319,750 |
| 13 | I-91 N @ US-5/EXIT 3 | 41,582 | 3,160,670 |
| 14 | US-20 W @ MONSON RD | 7,092 | 2,844,433 |
| 15 | WILBRAHAM RD W @ PARKER ST | 10,877 | 2,773,235 |
| 16 | I-90 E @ MA-32/EXIT 8 | 24,627 | 2,692,430 |
| 17 | MA-9 E @ MA-116/S PLEASANT ST | 13,383 | 2,614,060 |
| 18 | US-5 S @ I-91 (NORTHAMPTON) (SOUTH) | 11,564 | 2,580,626 |
| 19 | MA-116 S @ MA-9/COLLEGE ST/S PLEASANT ST | 13,466 | 2,547,563 |
| 20 | MA-9 W @ MA-47/MIDDLE ST | 10,085 | 2,500,169 |
| 21 | US-20 E @ RT-19/N MAIN ST/WALES RD | 6,983 | 2,322,205 |
| 22 | I-91 S @ US-202/EXIT 16 | 21,762 | 2,259,624 |
| 23 | MA-10 S @ MA-141/UNION ST | 7,557 | 2,250,702 |
| 24 | STATE ST E @ MAPLE ST/CHESTNUT ST | 5,125 | 2,207,653 |
| 25 | COOLEY ST S @ ALLEN ST | 15,328 | 2,172,391 |
| 26 | MAIN ST N @ MONARCH PL/HARRISON AVE | 7,503 | 2,158,639 |
| 27 | I-90 E @ HAMPDEN–WORCESTER COUNTY BORDER | 19,995 | 2,135,730 |
| 28 | US-202 N @ POCHASSIC ST | 15,416 | 2,115,457 |
| 29 | MA-33 N @ I-90 | 15,982 | 2,002,130 |
| 30 | MA-21 S @ US-20/BOSTON RD | 18,127 | 1,920,393 |
Data generated using RITIS Bottleneck Rankings tool. Total Delay — Base impact weighted by the difference between free-flow travel time and observed travel time multiplied by the average daily volume (AADT), adjusted by a day-of-the-week factor. This metric should be used to rank and compare the estimated total delay from all vehicles within the bottleneck.