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)

HWY DORCHSTR AVE

Fair

Over: COMB HAUL RD & MBTA RED

1.8 KM SW OF D ST, Suffolk, MA

Built 1917 Load: 23.1 t ADT: 34,913

HWY NORTH ROTARY

Fair

Over: ST 99 SULLIVAN SQ UNDRPS

1.6 KM N OF N WSHNGTON ST, Suffolk, MA

Built 1951 Load: 23.1 t ADT: 14,870

US 1 NE XWAY

Fair

Over: HWY MALDEN ST

.2 MI SW OF JET SR60&US1, Suffolk, MA

Built 1958 Load: 23.4 t ADT: 66,200

HWY WASHNGTON ST

Fair

Over: RR MBTA

NEAR DORCHESTER, Suffolk, MA

Built 1933 Load: 25.2 t ADT: 22,000

HWY MAFFA WAY

Fair

Over: COMB ORANGE & MBTA/BMRR

600 M NW OF SULLIVAN SQ, Suffolk, MA

Built 1952 Load: 25.3 t ADT: 19,526

I 90 RAMP D

Fair

Over: OTHER MBTA & RAMP B

EXIT 22 TOWARDS STUART ST, Suffolk, MA

Built 1981 Load: 25.9 t ADT: 9,569

I 93 NB

Fair

Over: I 93 SB/RMP LT/MIL RV

I93/US1 INTERCHANGE, Suffolk, MA

Built 2002 Load: 26.0 t ADT: 79,712

HWY RING RD

Fair

Over: I 90 & MBTA/CSX

.06 MI N OF JCT ST9, Suffolk, MA

Built 1981 Load: 26.1 t ADT: 9,600

I 93 NB B5-B10

Fair

Over: COMB MBTA & I 93 SB

.8 MI N OF RAMP I93&US1, Suffolk, MA

Built 1970 Load: 26.2 t ADT: 69,748

HWY BWKR NB OFRP

Fair

Over: HWY STRRW DR WB ON RMP

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

Built 1965 Load: 26.4 t ADT: 16,971

HWY WESTERN AVE

Fair

Over: HWY SOLDIERS FIELD RD

.32 KM N OF CAMB ST, Suffolk, MA

Built 1954 Load: 26.9 t ADT: 20,172

US 1 NB/L MYSTC L

Fair

Over: HWY CHELSEA STREET

L MYSTIC LOWER, Suffolk, MA

Built 1950 Load: 27.0 t ADT: 41,951

ST 16 EB

Fair

Over: HWY ACCESS RAMP E

3.2 KM S JCT SR60 & US1, Suffolk, MA

Built 1955 Load: 27.2 t ADT: 29,224

HWY CEDAR GROVE

Fair

Over: TR RED HSL

S. OF ADAMS ST., Suffolk, MA

Built 1935 Load: 27.4 t

HWY UP TRMNAL RD

Fair

Over: HWY LWR TERMINAL RDWY

LOGAN AIRPORT, Suffolk, MA

Built 1965 Load: 27.9 t ADT: 21,600

HWY N HARVARD ST

Fair

Over: HWY SOLDIERS FIELD RD

AT SOLDIERS FIELD ROAD, Suffolk, MA

Built 1954 Load: 28.1 t ADT: 30,388

HWY JAMAICAWAY

Fair

Over: OTHER PEAT BOG

.16 KM S OF HUNTINGTON AV, Suffolk, MA

Built 1937 Load: 28.2 t ADT: 48,750

HWY BNNINGTN ST

Fair

Over: TR BLUE LINE

OVER BLUE LINE, Suffolk, MA

Built 1961 Load: 28.4 t ADT: 17,300

I 93 SB B5-B10

Fair

Over: RR MBTA/BMRR

.9 MI N OF JCT I93&US1, Suffolk, MA

Built 1970 Load: 28.7 t ADT: 57,435

HWY MAVERICK ST

Fair

Over: OTHER PEDESTRIAN WLKWY

AT INT OF BRENAN AND MAV, Suffolk, MA

Built 1908 Load: 28.8 t ADT: 6,456

HWY SOUTH ROTARY

Fair

Over: ST 99 SULLIVAN SQ UNDRPS

1.6 KM N OF N WSHNGTON ST, Suffolk, MA

Built 1951 Load: 28.9 t ADT: 27,025

HWY NEPNST V PKY

Fair

Over: WATER NEPONSET RIVER

.16 KM E OF TRUMAN HWY, Suffolk, MA

Built 1849 Load: 29.0 t ADT: 23,300

HWY BROADWAY

Fair

Over: COMB MBTA/ST & FT PT C

0.5 KM SE JCT I93 & 190, Suffolk, MA

Built 1996 Load: 29.2 t ADT: 26,900

I 93 SB BT 38-46

Fair

Over: TR ORANGE LINE

.7 MI N OF JCT I93&US1, Suffolk, MA

Built 1970 Load: 29.5 t ADT: 87,100

I 93 SB BT 33-38

Fair

Over: TR ORANGE LINE

.6 MI N OF JCT I93&US1, Suffolk, MA

Built 1970 Load: 29.7 t ADT: 87,100

I 93 NB BT 33-38

Fair

Over: I 93 SB BT 33-38

.6 MI N OF JCT I93&US1, Suffolk, MA

Built 1970 Load: 29.8 t ADT: 81,000

ST 3 A/MORRSY BLV

Fair

Over: COMB NEPONSET AVE&RIVER

.2 MI E OF I 93, Suffolk, MA

Built 1970 Load: 29.9 t ADT: 76,500

HWY W SECOND ST

Fair

Over: COMB HAUL RD & MBTA RED

.8 KM SW D ST, Suffolk, MA

Built 1918 Load: 30.2 t ADT: 8,146

I 93 SB B10-B16

Fair

Over: RR MBTA/BMRR

1 MI N OF JCT I93&US1, Suffolk, MA

Built 1970 Load: 30.2 t ADT: 57,435

I 90 WB RAMP OFF

Fair

Over: RR MBTA

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

Built 1965 Load: 30.2 t ADT: 17,948

HWY RAMP X/XX

Fair

Over: OTHER RELIEF

MASS AVE. INT., Suffolk, MA

Built 2000 Load: 30.5 t ADT: 11,638

HWY QUINCY SHORE

Fair

Over: ST 3 A/HNCK NB&MBTA&RED

.2 MI E OF I 93, Suffolk, MA

Built 1970 Load: 30.8 t ADT: 33,000

ST 1 A/LEE BRBNK

Fair

Over: COMB ST16 & MBTA/BMRR

1000 FT SW OF JET SR60&1A, Suffolk, MA

Built 1934 Load: 31.7 t ADT: 54,957

I 93 NB BT 38-46

Fair

Over: I 93 SB BT 38-46

.7 MI N OF JCT US1&I93, Suffolk, MA

Built 1970 Load: 31.8 t ADT: 81,000

I 93 NB

Fair

Over: I 93 SB BT 61 - B5

.5 MI N OF JCT 193&US1, Suffolk, MA

Built 1970 Load: 32.2 t ADT: 37,000

HWY CURTIS ST

Fair

Over: RR CSX

.16 KM NW OF SR 1A, Suffolk, MA

Built 1906 Load: 32.3 t ADT: 12,413

HWY SARATOGA ST

Fair

Over: HWY MARTIN COUGHLIN BY

.8 KM SW OF SUFFOLK DOWNS, Suffolk, MA

Built 1906 Load: 32.3 t ADT: 12,026

HWY DANA AVE

Fair

Over: RR MBTA

1.3 KM W OF SR138/NEP.PKW, Suffolk, MA

Built 1908 Load: 32.3 t ADT: 10,600

HWY W THIRD ST

Fair

Over: COMB HAUL RD & CSX

.8 KM SW OF D ST OFFICE, Suffolk, MA

Built 1918 Load: 32.3 t ADT: 1,900

HWY N WSHNGTN ST

Fair

Over: HWY WATER ST

NEAR BOSTON GARDEN, Suffolk, MA

Built 1900 Load: 32.4 t ADT: 36,206

HWY W FOURTH ST

Fair

Over: WATER FORT POINT CHANNEL

.32 KM S I-90, Suffolk, MA

Built 1958 Load: 32.4 t ADT: 13,200

HWY BOWKER INT

Fair

Over: ST 2 COMM AV BEACON ST

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

Built 1965 Load: 32.4 t ADT: 53,577

HWY RAMP X/XX

Fair

Over: HWY ALBANY ST

ALBANY ST & FRONTAGE RD, Suffolk, MA

Built 2003 Load: 32.4 t ADT: 11,638

HWY SHIRLEY AVE

Fair

Over: TR BLUE LINE

102 FT WEST OF OCEAN AVE, Suffolk, MA

Built 1953 Load: 32.4 t ADT: 3,300

I 93 NB ON RMP

Fair

Over: I 93 SB/MBTA ORANGE LN

.8 MI N OF JCT I93&US1, Suffolk, MA

Built 1970 Load: 32.5 t ADT: 10,866

US 1 SB BTS 36/PR

Fair

Over: HWY ARLINGTON & 5TH ST

.2 MI NE OF TOBIN BR., Suffolk, MA

Built 1957 Load: 32.5 t ADT: 48,700

HWY DARTMOUTH ST

Fair

Over: TR COMM RAIL & OL

SPAN 3-5 BACK BAY STA, Suffolk, MA

Built 1961 Load: 32.7 t ADT: 8,900

HWY WILLIAMS ST

Fair

Over: COMB AMTRAK/MBTA & ORNG

BTWN ARMORY & EVERETT ST, Suffolk, MA

Built 1982 Load: 32.7 t ADT: 700

HWY MCBRIDE ST

Fair

Over: COMB AMTRAK/MBTA & ORNG

BTWN WASHINGTON & EVERETT, Suffolk, MA

Built 1982 Load: 32.7 t ADT: 3,300

I 93 NB OFF RAMP

Fair

Over: COMB RED LINE & RELIEF

2 MI S OF JCT I90&I93, Suffolk, MA

Built 1958 Load: 32.7 t ADT: 7,400

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.