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)

I 495 NB

Good

Over: HWY WOBURN ST

AT JCT I495 & WOBURN ST., Middlesex, MA

Built 2011 Load: 40.6 t ADT: 64,233

I 290

Good

Over: WATER ASSABET RIVER

MM30.8, E OF SLMN PD RD, Middlesex, MA

Built 1968 Load: 40.7 t ADT: 75,828

HWY LANDHAM RD

Good

Over: WATER HOP BROOK

.3 MI S OF RTE 20, Middlesex, MA

Built 2013 Load: 40.7 t ADT: 17,720

HWY WALDEN ST

Good

Over: RR MBTA/BMRR

2.1 KM S OF JCT SR2A&16, Middlesex, MA

Built 2009 Load: 41.1 t ADT: 9,181

US 3 /ST2&16/ALWF

Good

Over: RR MBTA/BMRR

.1 MI S OF RINGE AVE, Middlesex, MA

Built 1996 Load: 41.8 t ADT: 77,800

I 495 SB

Good

Over: HWY WOBURN ST

AT I495 & WOBURN ST., Middlesex, MA

Built 2011 Load: 41.8 t ADT: 64,355

ST 85 WASHNGTON ST

Good

Over: WATER ASSABET RIVER

0.25 MI SOUTH OF ST 62, Middlesex, MA

Built 2017 Load: 42.1 t ADT: 8,394

HWY MILL ST

Good

Over: WATER NISSITISSIT RIVER

.2 MI NORTH OF ST-113, Middlesex, MA

Built 2012 Load: 42.1 t ADT: 7,500

ST 28 MCGRATH HWY

Good

Over: HWY GILMAN ST

.1 MI S OF EVERETT AVE, Middlesex, MA

Built 2016 Load: 42.1 t ADT: 45,425

HWY LUNDBERG ST

Good

Over: RR MBTA/BMRR

0.25 MI NE RT 3A & LNDBRG, Middlesex, MA

Built 1922 Load: 42.3 t ADT: 2,750

ST 38 MAIN ST

Good

Over: WATER SHAWSHEEN RIVER

.24 KM SELY SHAWSHEEN ST., Middlesex, MA

Built 1997 Load: 42.5 t ADT: 21,500

I 495 SB

Good

Over: RR MBTA/BMRR

50 FT S OF WOBURN ST EXIT, Middlesex, MA

Built 2011 Load: 42.7 t ADT: 64,100

HWY SHAKER RD

Good

Over: WATER CATACUNEMAUG BROOK

@ INT. FREDONIAN ST., Middlesex, MA

Built 2011 Load: 42.7 t ADT: 600

I 495 NB

Good

Over: RR MBTA/BMRR

50 FT S OF WOBURN ST EXIT, Middlesex, MA

Built 2011 Load: 43.3 t ADT: 61,500

ST129 LOWELL ST

Good

Over: WATER MAPLE MEADOW BROOK

0.85 KM E OF JCT ST38, Middlesex, MA

Built 2008 Load: 43.4 t ADT: 28,600

HWY UNION AVE

Good

Over: WATER SUDBURY RIVER

.4 MI S OF MAIN ST, Middlesex, MA

Built 1985 Load: 43.5 t ADT: 14,143

HWY MINERAL ST

Good

Over: RR MBTA/BMRR

0.32 KM NE SUMMER AVE, Middlesex, MA

Built 1997 Load: 43.7 t ADT: 4,100

HWY TAYLOR ST

Good

Over: ST 2

.2 MI WEST OF I-495, Middlesex, MA

Built 2006 Load: 44.2 t ADT: 5,036

I 495 SB

Good

Over: WATER CONCORD RIVER

3.2KM SOUTH OF RT 38, Middlesex, MA

Built 2011 Load: 44.7 t ADT: 64,400

HWY PARKER ST

Good

Over: WATER FORT POND BROOK

CORNER OF CLOVER HILL RD, Middlesex, MA

Built 2018 Load: 45.4 t ADT: 3,000

HWY MEADOWBRK RD

Good

Over: WATER CANAL

.16 KM S OF RT 3, Middlesex, MA

Built 1950 Load: 45.4 t ADT: 1,300

I 495 SB

Good

Over: RR MBTA/BMRR

0.5 MI N OF RT 2, Middlesex, MA

Built 1959 Load: 45.4 t ADT: 43,698

HWY MARION ST

Good

Over: RR MBTA/CSX

0.3 MI N RT 135, Middlesex, MA

Built 1896 Load: 45.4 t ADT: 2,703

ST 9 WORCESTER ST

Good

Over: WATER LAKE COCHITUATE

0.6 MI W OF JCT RTE 9 &27, Middlesex, MA

Built 2007 Load: 45.7 t ADT: 52,165

HWY COCHTUATE ST

Good

Over: OTHER COCHITUATE RAIL TR

0.2 MI.WST.OF ST.27, Middlesex, MA

Built 1896 Load: 45.9 t ADT: 1,300

US 20 BOSTN PST RD

Good

Over: WATER SUDBURY RIVER

.75 MI. W. OF ST-27, Middlesex, MA

Built 2009 Load: 46.5 t ADT: 15,800

ST 2

Good

Over: TR MNUTEMAN BP

JUST W OLD ALEWIFE ROTARY, Middlesex, MA

Built 2004 Load: 47.4 t ADT: 70,300

HWY WHEELER RD

Good

Over: WATER WILLARD BROOK

AT CORNER OF RT.119, Middlesex, MA

Built 2011 Load: 47.4 t ADT: 2,597

HWY HERBERT ST

Good

Over: WATER BEAVER DAM BROOK

AT CORNER OF TRIPP ST., Middlesex, MA

Built 2009 Load: 47.5 t ADT: 8,300

HWY PAGE RD

Good

Over: WATER SHAWSHEEN RIVER

.1MI E OF RT 62, Middlesex, MA

Built 2009 Load: 48.0 t ADT: 9,900

HWY MERIAM ST

Good

Over: RR MBTA/BMRR

JUST OFF MAIN ST, Middlesex, MA

Built 2001 Load: 48.0 t ADT: 1,422

HWY DANFORTH ST

Good

Over: WATER SUDBURY RIVER

.1 MI. E. OF CONCORD ST., Middlesex, MA

Built 1982 Load: 48.6 t ADT: 1,000

HWY BROAD ST

Good

Over: WATER ASSABET RIVER

100 FT S OF WATER ST, Middlesex, MA

Built 2005 Load: 48.6 t ADT: 11,600

I 495 NB/ST 2 CD

Good

Over: ST 2

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

Built 2015 Load: 48.6 t ADT: 22,628

HWY DEXTER RD

Good

Over: WATER LAUNDRY BROOK

.96 KM. S. OF I-90, Middlesex, MA

Built 1898 Load: 49.0 t ADT: 1,000

HWY LOWELL ST

Good

Over: RR MBTA/BMRR

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

Built 2006 Load: 49.6 t ADT: 6,077

ST 27 /ST62/WALTHM

Good

Over: WATER ASSABET RIVER

0.1 MI E RT 62, Middlesex, MA

Built 2013 Load: 50.3 t ADT: 12,574

I 95 SB/ST128 SB

Good

Over: ST 38 WB/MAIN ST

RT 128 AT RT 38, Middlesex, MA

Built 1949 Load: 50.4 t ADT: 83,200

ST 62 MAIN ST

Good

Over: WATER ASSABET RIVER

.9 MI EAST OF RT 85, Middlesex, MA

Built 2009 Load: 50.5 t ADT: 7,969

US 3 SB

Good

Over: RR BMRR

1.25 MI NW DRUM HILL, Middlesex, MA

Built 2004 Load: 50.8 t ADT: 50,638

ST 9 /ST30/WRCSTR

Good

Over: WATER SUDBURY RIVER

.25 MI W OF PROSPECT ST, Middlesex, MA

Built 2009 Load: 51.0 t ADT: 52,165

US 3 SB

Good

Over: HWY MAIN ST

2 MI. NW DRUM HILL, Middlesex, MA

Built 2004 Load: 51.1 t ADT: 51,000

HWY SCHOOL ST

Good

Over: COMB KYAN ST & BMRR

0.40 KM S SCHOOL & BRDWAY, Middlesex, MA

Built 1995 Load: 51.2 t ADT: 18,491

ST 16 REV BCH PKWY

Good

Over: WATER MALDEN RIVER

.2 MI W OF SANTILLI CIR, Middlesex, MA

Built 2018 Load: 51.8 t ADT: 68,300

HWY CENTRAL ST

Good

Over: WATER SUDBURY RIVER

.1 MI W OF CONCORD ST, Middlesex, MA

Built 1920 Load: 51.8 t ADT: 8,000

I 495 NB

Good

Over: RR MBTA/BMRR

0.5 MI NE RT 2, Middlesex, MA

Built 1959 Load: 51.8 t ADT: 47,280

HWY CANAL STREET

Good

Over: WATER MERRIMACK CANAL

0.8 KM. W. OF RT. 3A, Middlesex, MA

Built 1986 Load: 52.5 t ADT: 1,250

US 3 NB

Good

Over: HWY WESTFORD RD

1.6 MI S OF ST-113, Middlesex, MA

Built 2004 Load: 53.4 t ADT: 50,100

HWY CATACNEMG RD

Good

Over: WATER CATACUNEMAUG BROOK

.8 M. N. OF LEOMINSTER RD, Middlesex, MA

Built 2002 Load: 54.0 t ADT: 520

HWY CHAPIN RD

Good

Over: WATER ASSABET RIVER

.2 MI S OF RIVER ROAD, Middlesex, MA

Built 1997 Load: 54.2 t ADT: 3,600

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.