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 62 BURLINGTN RD

Fair

Over: WATER SHAWSHEEN RIVER

.8 MI W OF RTE 3, Middlesex, MA

Built 1962 Load: 47.6 t ADT: 17,100

ST 38 MAIN ST

Fair

Over: RR BMRR

0.4 MI SELY RT 495, Middlesex, MA

Built 1938 Load: 47.7 t ADT: 29,095

HWY SUDBURY ST

Fair

Over: WATER MILL CANAL

.2MI.SOUTH OF ST.62, Middlesex, MA

Built 1956 Load: 48.0 t ADT: 2,500

I 90 WB

Fair

Over: HWY INDIAN ROCK ROAD

I-90 MM 119.8, Middlesex, MA

Built 1957 Load: 48.0 t ADT: 65,074

HWY WALNUT ST

Fair

Over: RR MBTA/BMRR

1.1 KM SW JCT SR28&3, Middlesex, MA

Built 1902 Load: 48.1 t ADT: 3,900

HWY DANE ST

Fair

Over: RR MBTA/BMRR

3.2 KM N OF HARVARD BR., Middlesex, MA

Built 1913 Load: 48.1 t ADT: 10,900

HWY BRIDGE ST

Fair

Over: WATER STONY BROOK

1 MI S OF ST-40, Middlesex, MA

Built 1870 Load: 48.1 t ADT: 3,400

HWY HENDERSON ST

Fair

Over: WATER ALEWIFE BROOK

072288 128465599, Middlesex, MA

Built 1913 Load: 48.3 t ADT: 650

ST 62 MAIN ST

Fair

Over: WATER ASSABET RIVER

2.4 KM SW RT 2, Middlesex, MA

Built 1978 Load: 48.5 t ADT: 17,300

HWY PLSNT ST CON

Fair

Over: COMB ST 9 WB & CSX

1 MI W OF JCT 90 & 9, Middlesex, MA

Built 1994 Load: 48.5 t ADT: 11,137

HWY LAWSBROOK RD

Fair

Over: WATER FORT POND BROOK

100 FT SE OF SCHOOL ST, Middlesex, MA

Built 1928 Load: 48.7 t ADT: 2,885

I 95 ON RAMP

Fair

Over: OTHER MDC AQUEDUCT

.16 KM NORTH OF RT 30, Middlesex, MA

Built 1950 Load: 48.9 t ADT: 4,914

HWY WALNUT ST

Fair

Over: TR GREEN LINE D

OVER GREEN LINE, Middlesex, MA

Built 1906 Load: 49.0 t ADT: 24,569

I 93 RAMP TS

Fair

Over: US 1 RAMP LC

NORTH OF CHARLES RIVER, Middlesex, MA

Built 2002 Load: 49.6 t ADT: 15,468

I 495 SB

Fair

Over: US 3

RT 495 AT RT 3, Middlesex, MA

Built 2004 Load: 49.8 t ADT: 61,400

I 495 NB

Fair

Over: US 3

RT 495 AT RT 3, Middlesex, MA

Built 2004 Load: 49.8 t ADT: 118,965

HWY SOUTH ST

Fair

Over: WATER STONY BROOK

AT WESTON LINE, Middlesex, MA

Built 2003 Load: 49.8 t ADT: 16,293

HWY GREENVILLE R

Fair

Over: WATER MASON BROOK

.2 MI N OF MASON RD SPLIT, Middlesex, MA

Built 1950 Load: 50.0 t ADT: 4,350

HWY TOWN FARM RD

Fair

Over: WATER STONY BROOK

.4 MI. N. OF RT. 225, Middlesex, MA

Built 1949 Load: 50.0 t ADT: 2,825

HWY SCHOOL ST

Fair

Over: HWY PARKING LOT

0.40 KM S SCHOOL & BRDWAY, Middlesex, MA

Built 1995 Load: 50.3 t ADT: 17,845

I 95 NB/ST128 NB

Fair

Over: ST 38 WB/MAIN ST

RT 128 AT RT 38, Middlesex, MA

Built 1949 Load: 50.4 t ADT: 77,200

I 93 NB OFF RMP

Fair

Over: OTHER TRI COMMUNITY GREE

0.1 MI S MONTVALE AVE, Middlesex, MA

Built 1958 Load: 50.7 t ADT: 9,700

HWY ORCHARD RD

Fair

Over: US 3

1.5 MI SE CONCORD RIVER, Middlesex, MA

Built 2004 Load: 50.9 t ADT: 1,800

HWY LOWELL ST

Fair

Over: OTHER MINUTMN BP & BROOK

200 FT SO PARK AVE, Middlesex, MA

Built 1937 Load: 51.0 t ADT: 4,914

HWY ROGERS ST

Fair

Over: WATER CONCORD RIVER

.5 MI. W. OF RTE. 38, Middlesex, MA

Built 1884 Load: 51.2 t ADT: 15,600

HWY BROOKSIDE RD

Fair

Over: WATER STONY BROOK

1 MI W OF CHELMS LINE, Middlesex, MA

Built 1860 Load: 51.3 t ADT: 3,600

HWY SCHOOL ST

Fair

Over: WATER PAWTUCKET CANAL

0.40 KM S SCHOOL & BRDWAY, Middlesex, MA

Built 1995 Load: 51.6 t ADT: 17,457

US 3 SB

Fair

Over: HWY PARKHURST RD

0.4 KM S. DRUM HIL, Middlesex, MA

Built 2004 Load: 51.8 t ADT: 100,800

US 3 NB

Fair

Over: HWY PARKHURST RD

0.4 KM S. DRUM HIL, Middlesex, MA

Built 2004 Load: 51.8 t ADT: 100,800

ST 4 SB

Fair

Over: US 3 NB/SB

2.2 MI N OF I 495, Middlesex, MA

Built 2004 Load: 52.1 t ADT: 14,018

I 90

Fair

Over: WATER AQDCT AT SHAYLR LN

AT MM 122.3, Middlesex, MA

Built 1957 Load: 52.2 t ADT: 122,017

US 3 CD SB

Fair

Over: ST110 CHELMSFORD ST

0.8 KM N OF I 495, Middlesex, MA

Built 2004 Load: 52.4 t ADT: 27,673

ST 62 GLEASNDLE RD

Fair

Over: WATER ELIZABETH BROOK

300 FT SO OF BROOKSIDE AV, Middlesex, MA

Built 1967 Load: 52.5 t ADT: 7,500

ST113 KENDALL RD

Fair

Over: US 3

RT 113 AT RT 3, Middlesex, MA

Built 2004 Load: 52.5 t ADT: 13,448

ST 2

Fair

Over: WATER NASHOBA BROOK

0.8 KM NW RT 2 ROTARY, Middlesex, MA

Built 1951 Load: 53.0 t ADT: 47,823

US 1

Fair

Over: HWY LYNN ST

.6 N OF JCT SR 60 & US1, Middlesex, MA

Built 1937 Load: 53.0 t ADT: 81,880

I 290 RAMP H

Fair

Over: HWY 85 CONNECTOR

.2 MILES EAST OF 495, Middlesex, MA

Built 1978 Load: 53.0 t ADT: 29,749

I 90 WB RAMP ON

Fair

Over: RR CSX/MBTA

AT INT 17 S29, Middlesex, MA

Built 1964 Load: 53.2 t ADT: 19,009

HWY CENTRE ST

Fair

Over: TR GREEN LINE D

BETWEEN NORWOOD & PAUL ST, Middlesex, MA

Built 1907 Load: 53.8 t ADT: 13,600

HWY RANGEWAY RD

Fair

Over: US 3

1.25 MI NE RTE 4, Middlesex, MA

Built 2004 Load: 54.3 t ADT: 4,500

HWY BROADWAY

Fair

Over: WATER WESTERN CANAL

AT LEWIS & SUFFOLK STS., Middlesex, MA

Built 1833 Load: 54.5 t ADT: 6,600

ST129 BILLERICA RD

Fair

Over: US 3

RT 129 AT RT 3, Middlesex, MA

Built 2004 Load: 54.8 t ADT: 25,000

HWY WOBURN ST

Fair

Over: WATER IPSWICH RIVER

0.33MI S OF CONCORD ST, Middlesex, MA

Built 1980 Load: 54.8 t ADT: 6,000

US 3 SB

Fair

Over: HWY RICHARDSON RD

0.75 MI NW DRUM HILL, Middlesex, MA

Built 2004 Load: 54.9 t ADT: 50,638

ST 16 MYST VAL PKY

Fair

Over: WATER MYSTIC RIVER

.4 MI W OF WINTHROP ST, Middlesex, MA

Built 1906 Load: 54.9 t ADT: 33,900

I 90 WB RAMP OFF

Fair

Over: RR MBTA

AT INT 16 S15, Middlesex, MA

Built 1964 Load: 55.1 t ADT: 8,500

HWY GRANITEVILLE

Fair

Over: RR BMRR

50 FT S OF BROADWAY, Middlesex, MA

Built 1998 Load: 55.1 t ADT: 4,300

HWY MOUNTAIN AVE

Fair

Over: COMB MBTA/BMRR & ORANGE

BTWN SUMMER & WASHINGTON, Middlesex, MA

Built 1890 Load: 55.3 t ADT: 3,000

US 3 SB

Fair

Over: ST110 CHELMSFORD ST

0.8 KM N OF I 495, Middlesex, MA

Built 2004 Load: 56.3 t ADT: 42,155

US 3 NB

Fair

Over: ST110 CHELMSFORD ST

0.8 KM N OF I 495, Middlesex, MA

Built 2004 Load: 56.3 t ADT: 27,931

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.