Middlesex County, CT

304 public highway bridges

Middlesex County Bridge Snapshot

Middlesex County, Connecticut contains 304 public highway bridges in the FHWA National Bridge Inventory. Roughly 30.3% are rated “Good,” 46.1% “Fair,” 3.3% “Poor,” and 3.3% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in CT are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

304
Total Bridges
30.3%
Good
3.3%
Poor
3.3%
Structurally Deficient

Condition Distribution

Good
30.3% (92)
Fair
46.1% (140)
Poor
3.3% (10)
SD
3.3% (10)

All Bridges (304)

SAW MILL ROAD

Good

Over: PARMELEE BROOK

0.3 MI NORTH OF ROUTE 17, Middlesex, CT

Built 2001 Load: 43.4 t ADT: 1,300

ROUTE 154

Good

Over: SOUTH COVE

3.9 MI N OF US ROUTE 1, Middlesex, CT

Built 1994 Load: 43.7 t ADT: 1,700

ROUTE 154

Good

Over: SOUTH COVE

4.34 MILES NORTH ROUTE 1, Middlesex, CT

Built 1994 Load: 44.1 t ADT: 1,700

ROUTE 17

Good

Over: LONG HILL BROOK

0.4 MI S OF ROUTE 155, Middlesex, CT

Built 2014 Load: 44.4 t ADT: 14,300

DOLBIA HILL ROAD 2

Good

Over: EIGHT MILE RIVER

715 FT E OF SSR 434, Middlesex, CT

Built 2005 Load: 44.4 t ADT: 87

ROUTE 154

Good

Over: CANDLEWOOD HILL BROOK

AT JCT RTE 81 & RTE 154, Middlesex, CT

Built 2016 Load: 45.0 t ADT: 5,400

OLD CLINTON ROAD

Good

Over: AMTRAK RAILROAD

1.4 MI E OF ROUTE 145, Middlesex, CT

Built 1997 Load: 46.5 t ADT: 2,400

ROUTE 148

Good

Over: BROOK

0.2 MI E OF ROUTE 79, Middlesex, CT

Built 2015 Load: 47.6 t ADT: 1,900

ROUTE 80

Good

Over: DEEP RIVER

1.1 MI W OF ROUTE 9, Middlesex, CT

Built 2021 Load: 48.0 t ADT: 6,100

CHERRY HILL ROAD

Good

Over: COGINCHAUG RIVER

0.1 S OF ROUTE 157, Middlesex, CT

Built 2000 Load: 48.0 t ADT: 2,786

ROUTE 148

Good

Over: PATTACONK BROOK

0.5 MI W OF ROUTE 9, Middlesex, CT

Built 1939 Load: 48.3 t ADT: 5,000

MILL STREET

Good

Over: SUMNER BROOK

0.1 MI N OF SAYBROOK ROAD, Middlesex, CT

Built 1953 Load: 48.6 t ADT: 158

PLEASANT VALLEY RD

Good

Over: MENUNKETESUCK RIVER

0.5 MI W. OF ROUTE 145, Middlesex, CT

Built 2022 Load: 49.2 t ADT: 938

LITTLE CITY ROAD

Good

Over: PONSET BROOK

825 FT W OF ROUTE 81, Middlesex, CT

Built 1961 Load: 50.2 t ADT: 1,500

FOXTOWN ROAD

Good

Over: EIGHT MILE RIVER

200 FT E. OF SSR 434, Middlesex, CT

Built 2019 Load: 51.2 t ADT: 362

EAST MAIN STREET

Good

Over: SUMNER BROOK

475 FT N OF ROUTE 17, Middlesex, CT

Built 1985 Load: 51.5 t ADT: 5,685

PROSPECT STREET

Good

Over: P & W RAILROAD

EXIT FR LIBERTY ST NO 2, Middlesex, CT

Built 2010 Load: 53.3 t ADT: 4,295

ROUTE 66

Good

Over: COGINCHAUG RIVER

105 FT W OF ROUTE 157, Middlesex, CT

Built 1979 Load: 53.4 t ADT: 25,400

WEST STREET

Good

Over: P & W RAILROAD

0.1 MI SOUTH OF ROUTE 157, Middlesex, CT

Built 2019 Load: 53.5 t ADT: 4,572

RIVER ROAD NO. 1

Good

Over: CHATFIELD HOLLOW BROOK

500FT W OF PAPER MILL RD, Middlesex, CT

Built 1960 Load: 53.8 t ADT: 357

ROUTE 9 SOUTHBOUND

Good

Over: BARTHOLOMEW ROAD

0.6 MI S OF ROUTE 155, Middlesex, CT

Built 1959 Load: 55.7 t ADT: 22,900

CHATFIELD HOLLOW R

Good

Over: CHATFIELD HOLLOW BROOK

0.3 MI N OF MAIN ENTRANCE, Middlesex, CT

Built 1934 Load: 55.9 t ADT: 359

ROUTE 9

Good

Over: GAME AREA ROAD

1.1 MI NO. OF RT 99, Middlesex, CT

Built 1968 Load: 56.1 t ADT: 61,300

ROUTE 82

Good

Over: HUNGERFORD BROOK

1.0 MI W OF ROUTE 148, Middlesex, CT

Built 2017 Load: 58.0 t ADT: 2,300

JOHNSONVILLE ROAD

Good

Over: MOODUS RIVER

0.4 MI NORTH OF ROUTE 149, Middlesex, CT

Built 2019 Load: 58.3 t ADT: 280

ROUTE 154

Good

Over: DEEP RIVER

0.6 MI N OF ROUTE 80, Middlesex, CT

Built 1984 Load: 58.6 t ADT: 5,000

RESERVOIR ROAD

Good

Over: MENUNKETESUCK RIVER

0.4 MI N. OF ROUTE 80, Middlesex, CT

Built 2009 Load: 59.3 t ADT: 306

INTERSTATE-95

Good

Over: LIBERTY STREET NO. 1

0.5 MI N OF ROUTE 81, Middlesex, CT

Built 1957 Load: 59.9 t ADT: 60,600

ROUTE 82

Good

Over: HEMLOCK VALLEY BROOK

1.5 MI E OF ROUTE 151, Middlesex, CT

Built 2017 Load: 60.9 t ADT: 2,700

WINTHROP ROAD

Good

Over: FALLS RIVER

1.8 MI S OF ROUTE 80, Middlesex, CT

Built 2016 Load: 61.6 t ADT: 210

KELSEYTOWN ROAD

Good

Over: MENUNKETESUCK RIVER

100'W OF BROOKSIDE DRIVE, Middlesex, CT

Built 2021 Load: 62.9 t ADT: 1,116

ROUTE 148

Good

Over: PATTACONK BROOK

0.7 MI W OF ROUTE 15, Middlesex, CT

Built 1984 Load: 63.2 t ADT: 4,400

ROUTE 80

Good

Over: MENUNKETESUCK RIVER

1.3.MI E. OF ROUTE 81, Middlesex, CT

Built 1983 Load: 63.5 t ADT: 3,600

INGHAM HILL ROAD

Good

Over: AMTRAK RAILROAD

0.4 MI N OF US ROUTE 1, Middlesex, CT

Built 1990 Load: 67.0 t ADT: 1,195

ROUTE 9 SOUTHBOUND

Good

Over: MATTABESSET RIVER

1.5 MI SOUTH OF ROUTE 72, Middlesex, CT

Built 1988 Load: 68.0 t ADT: 33,900

DUBLIN HILL ROAD

Good

Over: PONSET BROOK

40 FT N OF DEPOT RD, Middlesex, CT

Built 2019 Load: 68.7 t ADT: 810

MAPLE AVENUE

Good

Over: ALLYN BROOK

0.20 MI S OF ROUTE 68, Middlesex, CT

Built 1957 Load: 77.1 t ADT: 1,124

INTERSTATE-95

Good

Over: VALLEY RAILROAD

0.1 MI S OF ROUTE 154, Middlesex, CT

Built 1957 Load: 84.6 t ADT: 61,700

PICKET LANE

Good

Over: HERSIG BROOK

0.1 m S of Maiden Lane, Middlesex, CT

Built 2022 Load: 84.6 t ADT: 1,900

ROUTE 154

Good

Over: PLUM BANK CREEK

1.1 MI S OF US ROUTE 1, Middlesex, CT

Built 2021 Load: 97.2 t ADT: 3,600

NORTH ROAD EXTENS.

Good

Over: COLES BROOK

0.1 MI E OF I-91, Middlesex, CT

Built 2020 Load: 97.2 t ADT: 586

INTERSTATE-91

Good

Over: FALLS BROOK

500-FT SO. OF SMITH ST BR, Middlesex, CT

Built 1965 Load: 99.9 t ADT: 108,700

GLENWOOD ROAD

Good

Over: INDIAN RIVER

1000 FT E OF ROUTE 81, Middlesex, CT

Built 1958 Load: 99.9 t ADT: 2,966

ROUTE 9

Good

Over: GREAT BROOK

0.4 MI N OF ROUTE 82, Middlesex, CT

Built 1967 Load: 99.9 t ADT: 31,100

ROUTE 154

Poor

Over: BACK RIVER

0.8 MI S OF US ROUTE 1, Middlesex, CT

Built 1935 Load: 23.0 t ADT: 3,000

WATERSIDE LANE

Poor

Over: HAMMOCK RIVER

0.3 MI S OF US ROUTE 1, Middlesex, CT

Built 1994 Load: 23.4 t ADT: 510

ROUTE 154

Poor

Over: ROARING BROOK

100 FT N OF ROUTE 82, Middlesex, CT

Built 1931 Load: 32.7 t ADT: 3,800

RIVER ROAD

Poor

Over: FALLS RIVER

0.3 MI S OF BOOK HILL RD, Middlesex, CT

Built 1954 Load: 37.3 t ADT: 2,677

RIVER ROAD #1

Poor

Over: SUMNER BROOK

75 FEET EAST OF ROUTE 9, Middlesex, CT

Built 1920 Load: 45.0 t ADT: 2,836

ROUTE 9

Poor

Over: P&W RAILROAD & UNION ST

0.2 MI N OF ROUTE 17, Middlesex, CT

Built 1950 Load: 59.8 t ADT: 59,600

Related

Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial