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)

ST 27 N MAIN ST

Good

Over: RR MBTA/CSX

0.2 MI. N. OF RT-135, Middlesex, MA

Built 1895 Load: 54.4 t ADT: 23,000

US 3 NB

Good

Over: RR BMRR

1.25 MI NW DRUM HILL, Middlesex, MA

Built 2004 Load: 54.9 t ADT: 49,476

I 495 NB

Good

Over: ST 2

2 MI.NTH.OF ST.111, Middlesex, MA

Built 2015 Load: 55.1 t ADT: 53,214

I 495 SB

Good

Over: ST 2

2MI.NTH.OF ST.111, Middlesex, MA

Built 2015 Load: 55.1 t ADT: 40,908

ST 62 PARK ST

Good

Over: WATER IPSWICH RIVER

0.3 MI E OF HAVERHILL ST, Middlesex, MA

Built 1903 Load: 55.1 t ADT: 9,698

HWY RECREATN RD

Good

Over: I 95 /ST128

0.8 KM S MASS PIKE, Middlesex, MA

Built 2009 Load: 55.1 t ADT: 7,760

ST128 SERVICE RD

Good

Over: WATER CHARLES RIVER

NEWTON-WESTON TOWN LINE, Middlesex, MA

Built 1949 Load: 55.4 t ADT: 43,300

HWY FOUNTAIN ST

Good

Over: RR MBTA/CSX

.1 MI. N. OF ST-135, Middlesex, MA

Built 2001 Load: 56.1 t ADT: 4,500

US 3 SB

Good

Over: ST 62 BURLINGTON RD

RT 3 AT RT 62, Middlesex, MA

Built 2004 Load: 56.3 t ADT: 38,322

US 3 NB

Good

Over: WATER CONCORD RIVER

0.5 MI NW RT3 & CNCRD RD, Middlesex, MA

Built 2004 Load: 56.8 t ADT: 81,500

US 3 SB

Good

Over: WATER CONCORD RIVER

0.5 MI NW RT3 & CNCRD RD, Middlesex, MA

Built 2004 Load: 56.8 t ADT: 86,400

ST 4 NB

Good

Over: US 3 NB/SB

2.2 MI N OF I 495, Middlesex, MA

Built 2004 Load: 56.8 t ADT: 14,416

US 3 NB

Good

Over: ST 62 BURLINGTON RD

RT 3 AT RT 62, Middlesex, MA

Built 2004 Load: 56.9 t ADT: 51,663

US 3 NB

Good

Over: WATER SHAWSHEEN RIVER

0.5 MI NW RT 62 & RT 3, Middlesex, MA

Built 2004 Load: 57.5 t ADT: 60,000

US 3 SB

Good

Over: WATER SHAWSHEEN RIVER

0.5 MI NW RT 62 & RT 3, Middlesex, MA

Built 2004 Load: 57.5 t ADT: 60,000

ST 4 NASHUA RD

Good

Over: WATER CONCORD RIVER

1 MI N OF BEDFORD T.L., Middlesex, MA

Built 2008 Load: 58.0 t ADT: 13,600

ST 3 NB

Good

Over: US 3 SB CONNECTOR

0.25 M SLY N.H. LINE, Middlesex, MA

Built 2004 Load: 58.2 t ADT: 48,000

ST 3 SB

Good

Over: US 3 SB CONNECTOR

0.25 MI SLY NH LINE, Middlesex, MA

Built 2004 Load: 58.5 t ADT: 42,200

US 3 SB

Good

Over: HWY WESTFORD RD

1.6 MI S OF ST-113, Middlesex, MA

Built 2004 Load: 58.7 t ADT: 60,000

US 3 NB

Good

Over: HWY RICHARDSON RD

0.75 MI NW DRUM HILL, Middlesex, MA

Built 2004 Load: 59.5 t ADT: 49,476

ST 2 A/MASS AVE

Good

Over: ST 3 MEMORIAL DR

N END HARVARD BR, Middlesex, MA

Built 1931 Load: 59.7 t ADT: 20,560

US 3 NB

Good

Over: HWY DUNSTABLE RD

1.5 MI. N OF RTE 40, Middlesex, MA

Built 2004 Load: 60.4 t ADT: 82,679

US 3 SB

Good

Over: HWY DUNSTABLE RD

1.5 MI. N. OF RTE 40, Middlesex, MA

Built 2004 Load: 60.4 t ADT: 77,900

HWY CANAL ST

Good

Over: WATER HAMILTON CANAL

@ JACKSON & REVERE ST INT, Middlesex, MA

Built 2012 Load: 61.6 t ADT: 1,000

HWY WINTER ST

Good

Over: RR MBTA/CSX

.1MI.NTH.OF ST.135, Middlesex, MA

Built 2017 Load: 64.8 t ADT: 13,248

HWY NB LOWLL CON

Good

Over: HWY PLAIN ST

1.2 MILES N. OF I495, Middlesex, MA

Built 2012 Load: 66.9 t ADT: 23,194

HWY SB LOWLL CON

Good

Over: HWY PLAIN ST

1.2 MILES N OF I-495, Middlesex, MA

Built 2012 Load: 66.9 t ADT: 23,300

HWY WHITNEY ST

Good

Over: RR CSX

1.5 MI. NTH OF ST-16, Middlesex, MA

Built 2008 Load: 67.0 t ADT: 5,700

HWY MORTON ST

Good

Over: RR BMRR

0.16 KM E LAWRENCE STREET, Middlesex, MA

Built 2010 Load: 67.6 t ADT: 130

HWY RUSSELLS WAY

Good

Over: WATER TURTLE CROSSING

0.2 MI. NORTH OF ST-40, Middlesex, MA

Built 1997 Load: 67.8 t ADT: 857

ST117 FITCHBRG TPK

Good

Over: WATER SUDBURY RIVER

0.8 KM E OF SUDBURY RD, Middlesex, MA

Built 2009 Load: 69.7 t ADT: 19,400

I 90 WB RAMP OFF

Good

Over: HWY ACCESS RD

AT INT 16 S16A, Middlesex, MA

Built 1964 Load: 70.1 t ADT: 8,634

HWY RUSSELLS WAY

Good

Over: WATER GILSON BROOK

0.4 MI. NORTH OF ST-40, Middlesex, MA

Built 1997 Load: 72.6 t ADT: 857

ST135 UNION ST

Good

Over: WATER SUDBURY RIVER

200 FT E. OF CHESTNUT ST, Middlesex, MA

Built 2012 Load: 74.5 t ADT: 11,728

HWY PINE ST

Good

Over: WATER ASSABET RIVER

1.6 KM S OF RTE 2 AND 2A, Middlesex, MA

Built 2009 Load: 74.7 t ADT: 6,600

HWY CEDAR ST EXT

Good

Over: WATER SUDBURY RIVER

.3 MI N OF ST-85, Middlesex, MA

Built 2002 Load: 75.0 t ADT: 776

HWY SOUTH ST

Good

Over: WATER SQUANNACOOK RIVER

150 FT. S. OF ST-119, Middlesex, MA

Built 2004 Load: 79.6 t ADT: 1,810

HWY HIGH ST

Good

Over: RR MBTA/CSX

1 MI W MAIN & PLEASANT, Middlesex, MA

Built 1999 Load: 82.6 t ADT: 2,000

HWY HOUGHTON ST

Good

Over: WATER ASSABET RIVER

.2MI. S. OF ST-62, Middlesex, MA

Built 2014 Load: 97.2 t ADT: 5,150

HWY MAIN ST

Good

Over: WATER CATACUNEMAUG BROOK

AT MAIN INT IN TWN, Middlesex, MA

Built 1900 Load: 98.7 t ADT: 8,180

HWY RIVER ST

Good

Over: WATER FORT POND BROOK

.7 MI. E. OF ST. 27, Middlesex, MA

Built 1981 Load: 99.9 t ADT: 3,500

HWY MARTIN ST

Good

Over: WATER FORT POND BROOK

0.2 MI S. OF CENTRAL ST., Middlesex, MA

Built 1965 Load: 99.9 t ADT: 4,267

ST 31 GREENVLLE RD

Good

Over: WATER TRAPFALL BROOK

1 MI N RT 119, Middlesex, MA

Built 1981 Load: 99.9 t ADT: 2,778

US 3

Good

Over: WATER MOORES CANAL

1.4 MI NW DRUM HILL, Middlesex, MA

Built 1959 Load: 99.9 t ADT: 106,700

ST 2

Good

Over: HWY ACCESS ROAD

1.3 MILES NW OF BEDFORD R, Middlesex, MA

Built 2016 Load: 99.9 t ADT: 46,500

ST 30 PLEASANT ST

Good

Over: WATER STONEY BROOK

AT SOUTHBOROUGH T.L., Middlesex, MA

Built 1895 Load: 99.9 t ADT: 11,137

HWY MT WAYTE AVE

Good

Over: WATER EAMES BROOK

.4MI.S.W. OF FRANKLIN ST., Middlesex, MA

Built 1947 Load: 99.9 t ADT: 14,700

ST225 PLEASANT ST

Good

Over: WATER STONY BROOK

AT INT. OF PRESCOTT ST., Middlesex, MA

Built 2005 Load: 99.9 t ADT: 5,705

US 3 MEMORIAL DR

Poor

Over: HWY BROOKLINE ST

.2 MI FROM CITY LINE, Middlesex, MA

Built 1940 Load: 6.1 t ADT: 18,087

ST 28 MCGRATH HWY

Poor

Over: RR MBTA/BMRR

.1 MI S OF PEARL ST, Middlesex, MA

Built 1926 Load: 6.4 t ADT: 32,000

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

Related

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