Middlesex County, MA

820 public highway bridges

Middlesex County Bridge Snapshot

Middlesex County, Massachusetts contains 820 public highway bridges in the FHWA National Bridge Inventory. Roughly 20.4% are rated “Good,” 61.1% “Fair,” 8.8% “Poor,” and 8.8% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in MA are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

820
Total Bridges
20.4%
Good
8.8%
Poor
8.8%
Structurally Deficient

Condition Distribution

Good
20.4% (167)
Fair
61.1% (501)
Poor
8.8% (72)
SD
8.8% (72)

All Bridges (820)

HWY PAWTUCKET ST

Good

Over: WATER NORTHERN CANAL

AT FRENCH ST EXT, Middlesex, MA

Built 2022 Load: 32.4 t ADT: 2,900

HWY PAWTUCKET ST

Good

Over: WATER PAWTUCKET CANAL

AT MERRIMACK RIVER, Middlesex, MA

Built 2021 Load: 32.4 t ADT: 18,800

HWY VFW HWY

Good

Over: WATER BEAVER BROOK

1.6 KM E UNVRSTY OF LWLL, Middlesex, MA

Built 2022 Load: 32.4 t ADT: 25,788

HWY CANAL ST

Good

Over: WATER PAWTUCKET CANAL

0.15 KM FROM DUTTON ST, Middlesex, MA

Built 2019 Load: 32.4 t ADT: 10

HWY ELM ST

Good

Over: WATER MILLHAM BROOK

960' E OF BOUNDARY ST, Middlesex, MA

Built 2015 Load: 32.4 t ADT: 1,164

HWY FLORIDA RD

Good

Over: WATER ASSABET RIVER

0.1 MI N OF ST-62, Middlesex, MA

Built 2023 Load: 32.4 t ADT: 2,850

ST 38 MAIN ST

Good

Over: WATER MYSTIC RIVER

.1 MI N OF ST16, Middlesex, MA

Built 1908 Load: 32.4 t ADT: 67,900

HWY LONGLEY RD

Good

Over: WATER MULPUS BROOK

.1 MI. NE. OF RT. 2A, Middlesex, MA

Built 2021 Load: 32.4 t ADT: 800

HWY BROADWAY

Good

Over: RR MBTA/BMRR

2.4 KM NW OF JCT SR28&38, Middlesex, MA

Built 2020 Load: 32.4 t ADT: 28,000

HWY DUTTON RD

Good

Over: WATER HOP BROOK

0.4 MI SOUTH OF HUDSON RD, Middlesex, MA

Built 2021 Load: 32.4 t ADT: 4,000

HWY W MEADOW RD

Good

Over: WATER LOCKE BROOK

.15 MI. N. OF ST-119, Middlesex, MA

Built 2021 Load: 32.4 t ADT: 516

HWY WOERD AVE

Good

Over: WATER CHARLES RIVER

.6 KM. NE. OF NEWTON LINE, Middlesex, MA

Built 2021 Load: 32.4 t ADT: 2,760

HWY BEAVER BK RD

Good

Over: WATER BEAVER BROOK

.2 MI. E. OF LITTLETON LN, Middlesex, MA

Built 2023 Load: 32.4 t ADT: 2,929

ST 62 MIDDLESEX AV

Good

Over: WATER LUBBERS BROOK

225FT W OF NORTH STREET, Middlesex, MA

Built 2022 Load: 32.4 t ADT: 26,800

HWY SWANTON ST

Good

Over: WATER ABERJONA RIVER

E OF RT38,N OF WNCHSTR CT, Middlesex, MA

Built 2021 Load: 32.4 t ADT: 10,344

HWY SALEM ST

Good

Over: RR MBTA/BMRR

1.9 KM S RTE 93, Middlesex, MA

Built 2021 Load: 32.4 t ADT: 25,000

US 20 WB/BSTN PST

Good

Over: I 495

1.8 MI. E. OF NTHBORO TL., Middlesex, MA

Built 1962 Load: 32.5 t ADT: 28,074

HWY RINDGE RD

Good

Over: WATER FALULAH BROOK

3.6 MI. W. OF ST. 31, Middlesex, MA

Built 1997 Load: 32.7 t ADT: 3,103

HWY JEFFERSON ST

Good

Over: WATER WESTERN CANAL

0.96 KM. SW. OF RT. 38, Middlesex, MA

Built 1850 Load: 33.3 t ADT: 650

HWY WHITE PND RD

Good

Over: WATER ASSABET RIVER

.5 MI. S. OF ST.117, Middlesex, MA

Built 2007 Load: 33.5 t ADT: 180

HWY RIVER ST

Good

Over: WATER STONY BROOK

.1 MI SE OF NORTH ST, Middlesex, MA

Built 1997 Load: 33.5 t ADT: 3,100

HWY LINCOLN ST

Good

Over: COMB CSX & QUEBEC ST

0.40 KM W RT 3A, Middlesex, MA

Built 2002 Load: 33.9 t ADT: 1,681

HWY PEABODY ST

Good

Over: OTHER DEM RAIL TRAIL

0.4 MI SO OF RTE 111, Middlesex, MA

Built 2002 Load: 35.0 t ADT: 714

HWY GRAY ST

Good

Over: RR MBTA/BMRR

.4 MILES TWKS. TWN. LINE, Middlesex, MA

Built 1996 Load: 35.5 t ADT: 4,300

I 90 WB

Good

Over: WATER MDC RES 3

0.7 MI E OF TEMPLE ST, Middlesex, MA

Built 1957 Load: 35.6 t ADT: 47,529

HWY BROADWAY

Good

Over: WATER PAWTUCKET CANAL

NEAR GATE HOUSE, Middlesex, MA

Built 1852 Load: 35.6 t ADT: 9,000

ST 16 REV BCH PKWY

Good

Over: COMB RIVERS EDGE&MBTA&O

.2 MI E OF FELLSWAY, Middlesex, MA

Built 2018 Load: 35.6 t ADT: 68,300

HWY SPEEN ST

Good

Over: WATER FISKE POND

@ ST.135 AND SPEEN ST, Middlesex, MA

Built 2011 Load: 35.6 t ADT: 14,500

HWY TURNPIKE RD

Good

Over: WATER SQUANNACOOK RIVER

AT BARKER HILL ROAD, Middlesex, MA

Built 1999 Load: 35.6 t ADT: 1,699

HWY PELHAM IS RD

Good

Over: WATER SUDBURY RIVER

.4MI SW OF RT. 20, Middlesex, MA

Built 2012 Load: 35.6 t ADT: 1,900

I 90 RAMP R

Good

Over: OTHER MWRA AQUEDUCT

I-90 WB EXIT 15A RAMP, Middlesex, MA

Built 2017 Load: 35.6 t ADT: 7,800

HWY WETHERBEE ST

Good

Over: WATER NASHOBA BROOK

500 FT S OF RT 2A, Middlesex, MA

Built 1997 Load: 35.7 t ADT: 2,586

HWY NICHOLS ST

Good

Over: RR MBTA/BMRR

.32 KM SW TEWKSBURY, Middlesex, MA

Built 1968 Load: 35.7 t ADT: 3,400

HWY VINTON PD RD

Good

Over: WATER PEARL HILL BROOK

.1 MI W FITCHBURG RD, Middlesex, MA

Built 2009 Load: 35.8 t ADT: 200

HWY BOYLSTON ST

Good

Over: RR BMRR

0.4 KM N RTE 495, Middlesex, MA

Built 1999 Load: 35.9 t ADT: 17,500

HWY COOPER ST

Good

Over: RR MBTA/BMRR

JUST OFF MYRTLE AVE, Middlesex, MA

Built 1919 Load: 36.0 t ADT: 2,069

HWY PHINEAS ST

Good

Over: WATER BEAVER BROOK

3.4 MI N OF RT 3, Middlesex, MA

Built 1995 Load: 36.2 t ADT: 6,100

I 495

Good

Over: WATER MILL POND

@MM 78.7, 1.25 MI NE RT 2, Middlesex, MA

Built 1961 Load: 36.5 t ADT: 107,705

HWY EAMES ST

Good

Over: RR MBTA/BMRR

0.4 MI NE OF RTE 38, Middlesex, MA

Built 1994 Load: 36.7 t ADT: 5,800

HWY BOUNDARY ST

Good

Over: WATER ASSABET RIVER

100 FT. SE OF NTHBRO T.L., Middlesex, MA

Built 2010 Load: 36.9 t ADT: 4,239

ST119 SOUTH RD

Good

Over: WATER NASHUA RIVER

AT PEPPERELL TOWN LINE, Middlesex, MA

Built 1931 Load: 37.7 t ADT: 13,298

HWY WILEY ST

Good

Over: WATER MILL RIVER

.16 KM. S. OF RT. 129, Middlesex, MA

Built 1971 Load: 38.8 t ADT: 500

HWY MAIN ST

Good

Over: WATER SALMON BROOK

.5 MI. N. OF RTE 113, Middlesex, MA

Built 2014 Load: 38.9 t ADT: 2,600

ST 85 RIVER ST

Good

Over: WATER SUDBURY RIVER

1000FT S.OF SOUTHVILLE RD, Middlesex, MA

Built 2014 Load: 38.9 t ADT: 8,359

ST 2

Good

Over: I 95 /ST128

1.6 KM S RT 2A & RT 128, Middlesex, MA

Built 2016 Load: 38.9 t ADT: 84,703

HWY MILL ST

Good

Over: WATER SHAWSHEEN RIVER

1 MI. N. OF RT. 38, Middlesex, MA

Built 1998 Load: 38.9 t ADT: 170

HWY ACCESS RD

Good

Over: WATER STONY BROOK

AT WESTON TRANSFER STA, Middlesex, MA

Built 2013 Load: 38.9 t ADT: 1,034

HWY UNIVRSTY AVE

Good

Over: WATER MERRIMACK & CANAL

0.2 MI S OF RTE 113, Middlesex, MA

Built 2014 Load: 39.3 t ADT: 13,500

HWY ROBIN HLL ST

Good

Over: WATER ASSABET RIVER

.2 MI NE OF NORTHBORO TL, Middlesex, MA

Built 2010 Load: 39.8 t ADT: 1,300

I 495 NB

Good

Over: WATER CONCORD RIVER

3.2KM SOUTH OF RT 38, Middlesex, MA

Built 2011 Load: 40.6 t ADT: 61,200

Read our methodology — how this data is sourced, computed, and verified.

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial