Middlesex County, CT

304 public highway bridges

Middlesex County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Middlesex County, Connecticut contains 304 public highway bridges. Roughly 30.3% are rated “Good,” 46.1% “Fair,” and 3.3% “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.

304
Total Bridges
30.3%
Good
46.1%
Fair
3.3%
Poor Condition

Condition Distribution

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

All Bridges (304)

MIDDLEFIELD STREET

Fair

Over: COGINCHAUG RIVER

0.1 MI. W OF ROUTE 157, Middlesex, CT

Built 1900 Load: 43.4 t ADT: 1,622

SHIPYARD ROAD

Fair

Over: MINE BROOK

0.3 MI S OF ROUTE 151, Middlesex, CT

Built 1941 Load: 43.5 t ADT: 42

ROUTE 166

Fair

Over: AMTRAK RAILROAD

0.2 MI WEST OF US ROUTE 1, Middlesex, CT

Built 1933 Load: 43.5 t ADT: 12,500

ROUTE 9 SOUTHBOUND

Fair

Over: CEDAR GROVE TERRACE

1.0 MI S OF ROUTE 153, Middlesex, CT

Built 1966 Load: 43.7 t ADT: 17,500

ROUTE 9 NORTHBOUND

Fair

Over: TURKEY HILL ROAD

0.6 MI N OF ROUTE 82, Middlesex, CT

Built 1967 Load: 44.1 t ADT: 15,600

LIBERTY STREET #1

Fair

Over: AMTRAK RAILROAD

0.2 MI N OF US ROUTE 1, Middlesex, CT

Built 1992 Load: 44.2 t ADT: 2,900

ROUTE 154

Fair

Over: MILL CREEK

2.3 MI NORTH OF RTE 82, Middlesex, CT

Built 1928 Load: 44.6 t ADT: 4,200

INTERSTATE-95

Fair

Over: COW HILL ROAD

0.4 MI S OF ROUTE 81, Middlesex, CT

Built 1957 Load: 45.0 t ADT: 52,200

ROUTE 9 NORTHBOUND

Fair

Over: BARTHOLOMEW ROAD

0.6 MI S OF ROUTE 155, Middlesex, CT

Built 1959 Load: 46.3 t ADT: 22,700

INTERSTATE-395

Fair

Over: KATE DOWNING ROAD

3 MILES NORTH OF ROUTE201, Middlesex, CT

Built 1958 Load: 47.3 t ADT: 30,000

ROUTE 9 NORTHBOUND

Fair

Over: P&W RAILROAD

NEXT TO SEWAGE TREAT PLNT, Middlesex, CT

Built 1967 Load: 47.3 t ADT: 32,300

SR 602

Fair

Over: FALLS RIVER

1.1 MI N OF ROUTE 154, Middlesex, CT

Built 1983 Load: 47.6 t ADT: 4,100

ROUTE 17

Fair

Over: MAIN STREET EXTENSION

0.15 MI OFF RT9SB EXIT 13, Middlesex, CT

Built 1955 Load: 48.0 t ADT: 10,200

ROUTE 154

Fair

Over: SOUTH COVE

4.08 MI NORTH OF ROUTE 1, Middlesex, CT

Built 1994 Load: 48.0 t ADT: 1,700

ROUTE 145

Fair

Over: AMTRAK RAILROAD

0.2 MI N OF US ROUTE 1, Middlesex, CT

Built 1977 Load: 48.6 t ADT: 4,300

MINER STREET

Fair

Over: FALL BROOK

0.7 MI W OF ROUTE 217, Middlesex, CT

Built 1978 Load: 48.6 t ADT: 1,435

ROUTE 17

Fair

Over: CARR BROOK

1.6 MI N OF ROUTE 66, Middlesex, CT

Built 1938 Load: 48.6 t ADT: 3,200

JACKSON STREET #1

Fair

Over: P & W RAILROAD

0.1 MI N OF ROUTE 66, Middlesex, CT

Built 1936 Load: 49.0 t ADT: 56

INTERSTATE-91 NB

Fair

Over: NORTH ROAD

.57 MI NORTH OF ROUTE 372, Middlesex, CT

Built 1965 Load: 49.6 t ADT: 58,900

INTERSTATE 95 NORT

Fair

Over: CONNECTICUT RV, FERRY RD

.72 MI. OF ROUTE 156, Middlesex, CT

Built 1993 Load: 49.9 t ADT: 36,500

ROUTE 68

Fair

Over: ALLYNS BROOK

0.4 MI W OF RT 17, Middlesex, CT

Built 1929 Load: 50.2 t ADT: 8,900

ROUTE 81

Fair

Over: INDIAN RIVER

2.25 MI N. OF I-95, Middlesex, CT

Built 1988 Load: 50.2 t ADT: 7,000

ROUTE 9 NORTHBOUND

Fair

Over: CANDLEWOOD HILL RD & BRK

0.5 MI WEST OF ROUTE 154, Middlesex, CT

Built 1965 Load: 50.5 t ADT: 17,500

ROUTE 9 SOUTHBOUND

Fair

Over: P&W RAILROAD

.2 MI NORTH OF RT 99, Middlesex, CT

Built 1967 Load: 50.6 t ADT: 33,400

ROUTE 157

Fair

Over: COGINCHAUG RIVER

AT MIDDLETOWN TOWN LINE, Middlesex, CT

Built 1936 Load: 50.7 t ADT: 2,600

ROUTE 17

Fair

Over: RESERVOIR BRK & CATTLE P

0.5 MI N OF ROUTE 17A, Middlesex, CT

Built 1925 Load: 51.2 t ADT: 7,200

ROUTE 157

Fair

Over: P&W RAILROAD

0.4 MI NORTH OF DURHAM TL, Middlesex, CT

Built 1980 Load: 54.4 t ADT: 4,100

US ROUTE 1

Fair

Over: OYSTER RIVER

0.1 MI S OF ROUTE 154, Middlesex, CT

Built 1971 Load: 56.0 t ADT: 13,800

INTERSTATE-95

Fair

Over: SCHOOL HOUSE ROAD

0.5 MI N OF ROUTE 166, Middlesex, CT

Built 1957 Load: 56.1 t ADT: 48,000

ROUTE 9 NORTHBOUND

Fair

Over: KELSEY HILL ROAD

1.1 MI S OF ROUTE 80, Middlesex, CT

Built 1967 Load: 57.3 t ADT: 17,000

CIDER MILL ROAD

Fair

Over: COGINCHAUG RIVER

235 FT E OF ROUTE 157, Middlesex, CT

Built 1933 Load: 59.0 t ADT: 1,050

ROUTE 3

Fair

Over: MATTABESSET RIVER

ADJ TO JUNC RTE 3 & 372, Middlesex, CT

Built 1933 Load: 63.8 t ADT: 15,300

ABNER LANE

Fair

Over: POND MEADOW BROOK

0.1 MI W OF ROUTE 148, Middlesex, CT

Built 1998 Load: 64.9 t ADT: 119

POND MEADOW ROAD

Fair

Over: FALLS RIVER

0.2 MI S OF MAIN ST NO 2, Middlesex, CT

Built 1980 Load: 65.4 t ADT: 1,100

INTERSTATE-95

Fair

Over: ELM STREET

0.8 MI N OF US ROUTE 1, Middlesex, CT

Built 1957 Load: 66.4 t ADT: 24,000

ROUTE 9 NORTHBOUND

Fair

Over: MATTABESSET RIVER

1.5 MI SOUTH OF ROUTE 72, Middlesex, CT

Built 1988 Load: 69.8 t ADT: 32,900

BELL STREET

Fair

Over: SAWMILL BROOK

200 FT N OF SAWMILL ROAD, Middlesex, CT

Built 1955 Load: 94.6 t ADT: 166

INTERSTATE-95

Fair

Over: PATCHOGUE RIVER

0.1 MI S OF ROUTE 153, Middlesex, CT

Built 1957 Load: 97.2 t ADT: 50,800

DENNISON ROAD

Fair

Over: FALLS RIVER

300 FT E OF CURIOSITY LN, Middlesex, CT

Built 1968 Load: 97.2 t ADT: 1,182

RIVER ROAD # 2

Fair

Over: BROOK

0.2 MI S OF AIRCRAFT ROAD, Middlesex, CT

Built 1970 Load: 97.2 t ADT: 53

WESLEYAN HILLS ROA

Fair

Over: LONG HILL BROOK

50 FEET WEST OF ROUTE 17, Middlesex, CT

Built 1960 Load: 97.2 t ADT: 2,299

ROUTE 82

Fair

Over: ROARING BROOK

0.2 MI W OF ROUTE 154, Middlesex, CT

Built 1982 Load: 97.2 t ADT: 7,600

CESCA LANE

Fair

Over: BALL BROOK

100 FT N OF HADDAM Q. RD, Middlesex, CT

Built 2000 Load: 97.2 t ADT: 208

ROUTES 9 & 17

Fair

Over: SUMNER BROOK

JCT OF RTES 9 & 17, Middlesex, CT

Built 1953 Load: 99.9 t ADT: 41,400

ROUTE 17

Fair

Over: SUMNER BROOK

0.4 MI S OF ROUTE 9, Middlesex, CT

Built 1955 Load: 99.9 t ADT: 4,600

SR 609

Fair

Over: MOODUS RIVER

0.2 MI WEST OF ROUTE 149, Middlesex, CT

Built 1930 Load: 99.9 t ADT: 1,900

ROUTE 151

Fair

Over: PINE BROOK

0.8 MI N OF ROUTE 196, Middlesex, CT

Built 1930 Load: 99.9 t ADT: 1,800

ROUTE 9 RAMP 028

Fair

Over: PONSET BROOK

ROUTE 9 NB EXIT 9 ON RAMP, Middlesex, CT

Built 1965 Load: 99.9 t ADT: 3,500

ROUTE 9

Fair

Over: FALLS RIVER

0.8 MI S OF ROUTE 154, Middlesex, CT

Built 1967 Load: 99.9 t ADT: 34,000

ROUTE 66

Fair

Over: ABANDONED RR & DRAINAGE

0.1 MI E OF ROUTE 16, Middlesex, CT

Built 1977 Load: 99.9 t ADT: 8,600
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.