Suffolk County, MA

494 public highway bridges

Suffolk County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Suffolk County, Massachusetts contains 494 public highway bridges. Roughly 22.7% are rated “Good,” 64.4% “Fair,” and 6.9% “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.

494
Total Bridges
22.7%
Good
64.4%
Fair
6.9%
Poor Condition

Condition Distribution

Good
22.7% (112)
Fair
64.4% (318)
Poor
6.9% (34)

All Bridges (494)

I 93 RAMP SACN

Good

Over: COMB US1 RMP LT LC&ORNG

I93/US1 US1 INTERCHANGE, Suffolk, MA

Built 2005 Load: 57.6 t ADT: 21,600

I 93 RAMP SA-CN

Good

Over: HWY ACCESS RD

I93/US1 INTERCHANGE, Suffolk, MA

Built 2003 Load: 58.3 t ADT: 29,700

ST145 REV BCH PKWY

Good

Over: COMB BLUE LN & STATE RD

.1 MI N OF WINTHROP AVE, Suffolk, MA

Built 1933 Load: 58.3 t ADT: 30,300

I 93 RAMP X ACCS

Good

Over: OTHER RELIEF

1 KM E. OF I93, Suffolk, MA

Built 2005 Load: 61.0 t ADT: 17,600

ST145 SARATOGA ST

Good

Over: WATER BELLE ISLE INLET

AT WINTHROP TOWN LINE, Suffolk, MA

Built 2013 Load: 61.8 t ADT: 34,138

HWY WASHNGTON AV

Good

Over: RR MBTA & SILVER LINE

1.6 KM S OF JCT US1&SR16, Suffolk, MA

Built 2018 Load: 64.8 t ADT: 9,310

HWY CUMMINS HWY

Good

Over: RR MBTA

2000FT NW OFJCTSR28&SR138, Suffolk, MA

Built 1901 Load: 65.7 t ADT: 24,439

US 1 RAMP TC

Good

Over: COMB US1NB & MILLERS RI

NORTH OF CANA TUNNEL, Suffolk, MA

Built 1989 Load: 68.2 t ADT: 45,517

HWY REDFIELD ST

Good

Over: COMB MBTA&REDS&FRKLN ST

OVER RED LINE, Suffolk, MA

Built 1955 Load: 90.1 t ADT: 700

ST 9 HUNTINGTN AV

Good

Over: OTHER RELIEF

RING ROAD, Suffolk, MA

Built 1965 Load: 99.9 t ADT: 23,275

HWY RIVER ST

Poor

Over: RR AMTRAK/MBTA

.8 KM SW OF MATTAPAN SQ., Suffolk, MA

Built 1883 ADT: 24,000

HWY DORCHSTR AVE

Poor

Over: COMB MBTA & RED LN

OVER RED LINE, Suffolk, MA

Built 1924 ADT: 11,800

HWY STORRW DR WB

Poor

Over: HWY STORROW DR EB

.1 N OF BEACON ST, Suffolk, MA

Built 1951 ADT: 57,770

HWY MERIDIAN ST

Poor

Over: WATER CHELSEA RIVER

@ CHELSEA TL = C09005, Suffolk, MA

Built 1954 Load: 4.3 t ADT: 22,435

HWY CANTERBRY ST

Poor

Over: RR AMTRAK/MBTA

2.3 KM NW OFJCTSR28&SR138, Suffolk, MA

Built 1985 Load: 7.8 t ADT: 16,034

HWY EMBKT WB ON

Poor

Over: HWY EMBANKMENT RD EB

CHARLES CIRCLE STORROW D, Suffolk, MA

Built 1951 Load: 10.7 t ADT: 14,483

US 1 NB/LOW DECK

Poor

Over: HWY CHELSEA LOCAL STRE

CHEL APPR LOW, Suffolk, MA

Built 1950 Load: 10.8 t ADT: 41,951

HWY COMM AV OFRP

Poor

Over: WATER MUDDY RIVER

.2 MI S OF ST RTE 2A, Suffolk, MA

Built 1965 Load: 11.7 t ADT: 7,300

HWY STORRW DR EB

Poor

Over: HWY BOWKR ON & OFF RPS

AT CHARLESGATE, Suffolk, MA

Built 1954 Load: 13.4 t ADT: 32,000

HWY MORRSSEY BLV

Poor

Over: WATER DORCHESTER BAY

.2 MI E OF I 93, Suffolk, MA

Built 1927 Load: 13.6 t ADT: 78,900

HWY BWKR SB ONRP

Poor

Over: HWY KENMORE OFF RMP

.2 MI S OF ST RTE 2A, Suffolk, MA

Built 1965 Load: 14.3 t ADT: 9,900

ST 16 REV BCH PKWY

Poor

Over: ST107 BROADWAY

.32 KM S OF BEACH ST, Suffolk, MA

Built 1931 Load: 14.6 t ADT: 36,500

HWY BWKR SB ONRP

Poor

Over: WATER MUDDY RIVER

.2 MI S OF ST RTE 2A, Suffolk, MA

Built 1965 Load: 18.7 t ADT: 18,470

I 90 EB

Poor

Over: RR MBTA

.1 MI S. CHARLES RV S111, Suffolk, MA

Built 1965 Load: 18.9 t ADT: 76,373

I 90 WB

Poor

Over: RR MBTA

.1 MI S. CHARLES RV S111, Suffolk, MA

Built 1965 Load: 18.9 t ADT: 74,344

HWY CONGRESS ST

Poor

Over: WATER FORT POINT CHANNEL

OVER FT POINT CHANNEL, Suffolk, MA

Built 1850 Load: 21.0 t ADT: 17,100

HWY DORCHSTR AVE

Poor

Over: RR MBTA SPUR

OVER RED LINE, Suffolk, MA

Built 1925 Load: 22.0 t ADT: 11,800

HWY BWKR NB OFRP

Poor

Over: OTHER RELIEF

.2 MI S OF ST RTE 2A, Suffolk, MA

Built 1965 Load: 25.3 t ADT: 8,315

HWY MISHAWUM ST

Poor

Over: ST 99 SULLIVAN SQ UNDRPS

1.6 KM N OF N WSHNGTON ST, Suffolk, MA

Built 1951 Load: 28.5 t ADT: 6,900

HWY BLUE HILL AV

Poor

Over: RR MBTA

1.2 KM N JCTSR28&SR138, Suffolk, MA

Built 1902 Load: 31.5 t ADT: 41,250

HWY CAMBRIDGE ST

Poor

Over: WATER CHARLES RIVER

.64 KM E OF N HARVARD ST, Suffolk, MA

Built 1925 Load: 32.5 t ADT: 33,400

HWY WALWORTH ST

Poor

Over: RR MBTA

JUST N OF BELGRADE AVE, Suffolk, MA

Built 1918 Load: 32.7 t ADT: 10,216

HWY PARK AVE

Poor

Over: US 1 NE XWAY

01.2 KM N OF JCT SR16, Suffolk, MA

Built 1957 Load: 32.8 t ADT: 3,900

I 93 BT SB4-N ABT

Poor

Over: HWY CONNECTORS D & K

1.9 KM N OF JCT. US1&I93, Suffolk, MA

Built 1970 Load: 33.8 t ADT: 73,094

HWY TRMNT-ARLNGT

Poor

Over: RR AMTRAK/MBTA

.16 KM S OF I90, Suffolk, MA

Built 1979 Load: 34.0 t ADT: 30,400

I 90 EB RAMPS OFF

Poor

Over: RR MBTA/CSX

AT COPLEY PLACE S60, Suffolk, MA

Built 1965 Load: 34.5 t ADT: 16,878

ST 28 CHAS R DM RD

Poor

Over: WATER CHARLES RIVER

.2 MI NW OF NASHUA ST, Suffolk, MA

Built 1906 Load: 36.3 t ADT: 61,200

HWY W FOURTH ST

Poor

Over: COMB HAUL RD & CSX

1219 M SW OF D ST OFFICE, Suffolk, MA

Built 1918 Load: 36.6 t ADT: 4,913

HWY BYRON ST

Poor

Over: TR BLUE LINE

OVER BLUE LINE, Suffolk, MA

Built 1950 Load: 38.6 t ADT: 1,200

HWY W ROXBRY PKY

Poor

Over: RR MBTA

.1 MI E OF BEACH ST, Suffolk, MA

Built 1921 Load: 38.8 t ADT: 36,100

HWY COUNTY RD

Poor

Over: US 1 NE XWAY

1.1 KM SW OF JCT SR16, Suffolk, MA

Built 1955 Load: 40.0 t ADT: 14,900

HWY SAVIN HLL AV

Poor

Over: TR RED LINE

0.2M E DORCHESTER AVE, Suffolk, MA

Built 1925 Load: 42.5 t ADT: 6,700

ST 1 A/LEE BRBNK

Poor

Over: ST145 REVERE BCH PKWY

.5 MI SW OF JET SR 60&1A, Suffolk, MA

Built 1934 Load: 45.7 t ADT: 55,630

US 1 SB

Poor

Over: US 1 NB

S APPR TOBIN, Suffolk, MA

Built 1994 Load: 45.9 t ADT: 34,040

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

Related

Browse all → | Rankings →
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.