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 RESRVATN RD

Fair

Over: RR AMTRAK/MBTA

1.2 KM NE OF WOLCOTT SQ., Suffolk, MA

Built 1898 Load: 40.8 t ADT: 4,300

I 93 RAMP K

Fair

Over: COMB I93NB & RAMP MW

0.5 M S. OF I-90, Suffolk, MA

Built 2002 Load: 40.8 t ADT: 12,563

HWY TREMONT ST

Fair

Over: COMB AMTRAK/MBTA & ORNG

2ND BR S OF RUGGLES ST, Suffolk, MA

Built 1981 Load: 40.9 t ADT: 22,250

HWY W FOURTH ST

Fair

Over: COMB FNDRY ST&MBTA&AMTK

1.6 KM SE OF JCT I93&90, Suffolk, MA

Built 1893 Load: 41.0 t ADT: 21,630

I 93 RAMP XX

Fair

Over: HWY W FOURTH ST

0.1 K E. OF 193 NB, Suffolk, MA

Built 2002 Load: 41.0 t ADT: 6,041

I 93 RAMP XX

Fair

Over: HWY HOV EB

2.5 M E. OF 193 NB, Suffolk, MA

Built 2001 Load: 41.1 t ADT: 4,578

ST107 BROADWAY

Fair

Over: WATER MILL CREEK

IN CHELSEA, Suffolk, MA

Built 1993 Load: 41.2 t ADT: 19,977

HWY RAMP T-A/D

Fair

Over: I 90 & RAMP 1A-A/D

1.20 KM SE OF CALLAHAN TU, Suffolk, MA

Built 2001 Load: 41.4 t ADT: 14,400

HWY RAMP 1A-D

Fair

Over: HWY ARRIVAL ROADWAY

1.20 KM SE OF CALLAHAN T, Suffolk, MA

Built 2001 Load: 41.4 t ADT: 10,600

I 93 RAMP N-S

Fair

Over: OTHER RELIEF

LEVERETT CIR-UNIT 2, Suffolk, MA

Built 1999 Load: 41.4 t ADT: 34,304

I 93 NB

Fair

Over: OTHER RELIEF

0.0 M S I-90 WB B16702 U2, Suffolk, MA

Built 2002 Load: 41.5 t ADT: 77,653

I 93 /US1/ST3

Fair

Over: OTHER PED/ BIKE PATH

7.4 KM S OF JCT I90&I93, Suffolk, MA

Built 1956 Load: 41.6 t ADT: 172,489

US 1 CUTLER HWY

Fair

Over: WATER TOWN LINE BROOK

US-1 AT MM 53.6, Suffolk, MA

Built 1957 Load: 41.6 t ADT: 89,000

I 90

Fair

Over: WATER MUDDY RIVER

.2 MI FENWAY PARK S53, Suffolk, MA

Built 1965 Load: 41.7 t ADT: 128,567

I 93 NB

Fair

Over: COMB I90 RPS&HOV&AMTK

0.2 MI N I-90 EB, Suffolk, MA

Built 2002 Load: 41.7 t ADT: 116,800

HWY FOREST HILLS

Fair

Over: HWY CEMETERY RD

JUST N OF MORTON ST, Suffolk, MA

Built 1894 Load: 41.8 t ADT: 16,034

HWY MASS AV CONN

Fair

Over: OTHER RELIEF

MASS AVE. INT., Suffolk, MA

Built 2000 Load: 41.9 t ADT: 55,474

I 93 /US1/ST3

Fair

Over: RR CSX SPUR

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

Built 1958 Load: 42.0 t ADT: 188,320

ST 1 A

Fair

Over: OTHER RELIEF

1.3 KM NE OF CALLAHAN TUN, Suffolk, MA

Built 1951 Load: 42.1 t ADT: 102,900

HWY MASS AVE

Fair

Over: OTHER RELIEF

MASS AVE. INT., Suffolk, MA

Built 2000 Load: 42.5 t ADT: 50,400

I 93 RAMP NS

Fair

Over: OTHER RELIEF

I93 RAMP NS, Suffolk, MA

Built 1999 Load: 42.6 t ADT: 31,810

I 93 RAMP SN

Fair

Over: OTHER RELIEF

I93 RAMP SN, Suffolk, MA

Built 1999 Load: 42.6 t ADT: 32,800

I 93 RAMP CC & FX

Fair

Over: COMB I90& RP KK &AMTRK

I93/I90 INTERCHANGE, Suffolk, MA

Built 2003 Load: 42.8 t ADT: 22,400

HWY SUMMER ST

Fair

Over: WATER FORT POINT CHANNEL

OVER FT POINT CHANNEL, Suffolk, MA

Built 1899 Load: 43.1 t ADT: 28,300

I 93 RAMP K

Fair

Over: OTHER RELIEF

I-93/I-90 INTERCHANGE, Suffolk, MA

Built 2004 Load: 43.1 t ADT: 8,793

HWY BROADWAY

Fair

Over: RR MBTA & SILVER LINE

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

Built 1917 Load: 43.1 t ADT: 13,060

HWY RAMP DB

Fair

Over: OTHER RELIEF

HAUL RD AND D ST INTRSECT, Suffolk, MA

Built 2005 Load: 43.2 t ADT: 8,800

HWY BEACON ST

Fair

Over: WATER MUDDY RIVER

.32 KM W OF JCT BEACON&2A, Suffolk, MA

Built 1900 Load: 43.4 t ADT: 7,500

I 90 EB

Fair

Over: US 20 N BEACON ST

.2 MI S. CHARLES RV S39, Suffolk, MA

Built 1964 Load: 43.4 t ADT: 44,057

I 93 RAMP LL

Fair

Over: COMB HOV EB & AMTRK&WYE

.5 MI S. OF I90 EB, Suffolk, MA

Built 2002 Load: 43.4 t ADT: 11,522

I 90 EB

Fair

Over: HWY PARSONS ST

.16 KM S. CHARLES RV S36, Suffolk, MA

Built 1964 Load: 43.5 t ADT: 44,057

I 90 WB

Fair

Over: HWY PARSONS ST

.16 KM S. CHARLES RV S36, Suffolk, MA

Built 1964 Load: 43.5 t ADT: 43,643

HWY SHAWMUT AVE

Fair

Over: COMB AMTRAK/MBTA

OVER ORANGE LINE, Suffolk, MA

Built 1932 Load: 43.5 t ADT: 8,700

HWY MERIDIAN ST

Fair

Over: ST 1 A/NB

AT EAST END OF CAL TNL, Suffolk, MA

Built 1961 Load: 43.7 t ADT: 20,689

I 93 STRRW DR CON

Fair

Over: WATER CHARLES RIVER

I93/US1 INTERCHANGE, Suffolk, MA

Built 1999 Load: 43.7 t ADT: 74,323

HWY BOYLSTON ST

Fair

Over: WATER MUDDY RIVER

.2 MI W OF MASS AVE, Suffolk, MA

Built 1881 Load: 43.8 t ADT: 51,600

US 1 RAMP TC

Fair

Over: RR MBTA

I93/US1 INTERCHANGE, Suffolk, MA

Built 2002 Load: 44.1 t ADT: 51,207

I 93 SB

Fair

Over: HWY W FOURTH ST

UNIT 1, Suffolk, MA

Built 2000 Load: 44.1 t ADT: 164,570

I 90 EB ON-RAMP

Fair

Over: COMB I90 W ONRP A & CSX

AT TOLL PLAZAS S104B, Suffolk, MA

Built 1965 Load: 44.2 t ADT: 12,400

HWY BELLEVUE ST

Fair

Over: RR MBTA

1.8 KM NE OF JCTSR109&RT1, Suffolk, MA

Built 1936 Load: 44.3 t ADT: 3,100

HWY MASS AVE

Fair

Over: ST 9 HUNTINGTON AVE

1.1 KM S OF CHARLES RIV, Suffolk, MA

Built 1941 Load: 44.5 t ADT: 33,100

I 93 /US1/ST3

Fair

Over: HWY MORRISSEY BLVD

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

Built 1958 Load: 44.5 t ADT: 188,320

I 93 /US1/ST3

Fair

Over: HWY THEATRE ACCESS RD

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

Built 1957 Load: 44.6 t ADT: 177,033

I 93 RAMP XXE

Fair

Over: HWY BROADWAY/EXT

0.1M E. OF I93 NB, Suffolk, MA

Built 2002 Load: 44.6 t ADT: 6,724

I 90 EB

Fair

Over: HWY BROOKS ST

.16 KM S. CHARLES RV S34, Suffolk, MA

Built 1964 Load: 45.0 t ADT: 55,255

I 90 WB

Fair

Over: HWY BROOKS ST

.16 KM S. CHARLES RV S34, Suffolk, MA

Built 1964 Load: 45.0 t ADT: 51,617

HWY BERKELEY ST

Fair

Over: COMB AMTRAK/MBTA & ORNG

1.7KM W. OF S., Suffolk, MA

Built 1982 Load: 45.0 t ADT: 19,900

US 1 RAMP TC

Fair

Over: I 93 RMPS SN NS ST

I93/US1 INTERCHANGE, Suffolk, MA

Built 2002 Load: 45.4 t ADT: 35,800

HWY S BOS BPS RD

Fair

Over: OTHER RELIEF

AT FRONTAGE RD NB, Suffolk, MA

Built 1998 Load: 45.4 t ADT: 13,190

HWY FRNT RD SB

Fair

Over: OTHER RELIEF

BYPASS RD INT., Suffolk, MA

Built 1997 Load: 45.8 t ADT: 42,155

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.