Middlesex County, MA

820 public highway bridges

Middlesex County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Middlesex County, Massachusetts contains 820 public highway bridges. Roughly 20.4% are rated “Good,” 61.1% “Fair,” and 8.8% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

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

820
Total Bridges
20.4%
Good
61.1%
Fair
8.8%
Poor Condition

Condition Distribution

Good
20.4% (167)
Fair
61.1% (501)
Poor
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

HWY BEAVER ST

Poor

Over: WATER BEAVER BROOK

0.16 KM N. OF RT. 113, Middlesex, MA

Built 1971 ADT: 3,500

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

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

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.