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)

ROUTE 151

Fair

Over: MINE BROOK

0.6 MI S OF ROUTE 66, Middlesex, CT

Built 1989 Load: 32.7 t ADT: 2,500

ROUTE 149

Fair

Over: MOODUS RIVER

1.1 MI N OF ROUTE 151, Middlesex, CT

Built 1989 Load: 32.7 t ADT: 3,200

THAYER ROAD

Fair

Over: BIBLE ROCK BROOK

165 FT W. OF ROUTE 154, Middlesex, CT

Built 1990 Load: 32.7 t ADT: 484

SCHOOL HOUSE ROAD

Fair

Over: AMTRAK RAILROAD

0.3 MI N OF US ROUTE 1, Middlesex, CT

Built 1933 Load: 32.7 t ADT: 2,000

LITTLE CITY ROAD

Fair

Over: CANDLEWOOD HILL BROOK

JCT CANDLEWOOD HILL ROAD, Middlesex, CT

Built 1991 Load: 32.7 t ADT: 700

PINE LEDGE ROAD

Fair

Over: STREAM

2.4 MI E OF CEDAR SWAMP, Middlesex, CT

Built 1930 Load: 32.7 t ADT: 120

ROUTE 80

Fair

Over: CHATFIELD HOLLOW BROOK

1.3 MI W OF ROUTE 81, Middlesex, CT

Built 1935 Load: 33.6 t ADT: 5,000

GRISTMILL RD

Fair

Over: MOODUS RIVER

0.25 MI W OF ROUTE 149, Middlesex, CT

Built 1956 Load: 33.6 t ADT: 150

ROUTE 9 NORTHBOUND

Fair

Over: NEDOBITY ROAD

2.9 MI N OF ROUTE 81, Middlesex, CT

Built 1965 Load: 33.7 t ADT: 17,100

ROUTE 9 SOUTHBOUND

Fair

Over: NEDOBITY ROAD

2.9 MI N of RT 81, Middlesex, CT

Built 1965 Load: 34.0 t ADT: 18,300

ROUTE 9 SOUTHBOUND

Fair

Over: BEAVER MEADOW ROAD

0.19 MI S OF EXIT 8 SB, Middlesex, CT

Built 1967 Load: 34.3 t ADT: 15,100

ROUTE 80

Fair

Over: DEEP RIVER

0.1 MI W OF ROUTE 9, Middlesex, CT

Built 1967 Load: 34.7 t ADT: 6,100

INTERSTATE-95

Fair

Over: POND MEADOW ROAD

1.7 MI N OF US ROUTE 145, Middlesex, CT

Built 1957 Load: 35.0 t ADT: 50,800

ROUTE 17 NB

Fair

Over: EAST MAIN STREET

100' NORTH OF MAPLE STREE, Middlesex, CT

Built 1954 Load: 35.6 t ADT: 8,000

INTERSTATE-91 NB

Fair

Over: EVERGREEN ROAD

.69 MI SO OF RTE 9 O-PASS, Middlesex, CT

Built 1965 Load: 35.6 t ADT: 57,700

ROUTE 9 SOUTHBOUND

Fair

Over: FLORAL PARK ROAD

0.7 MI N OF I-95, Middlesex, CT

Built 1966 Load: 35.6 t ADT: 15,100

WIG HILL ROAD

Fair

Over: PATTACONK BROOK

90 FT N OF ROUTE 148, Middlesex, CT

Built 1950 Load: 35.6 t ADT: 150

EAST HADDAM - COLC

Fair

Over: MOODUS RESERVOIR

2.9 MI E OF ROUTE 151, Middlesex, CT

Built 2000 Load: 36.0 t ADT: 2,300

ST. PETERS LANE

Fair

Over: CANDLEWOOD HILL BROOK

75' S OF CANDLEWOOD RD, Middlesex, CT

Built 1963 Load: 36.6 t ADT: 816

BRIDGE STREET

Fair

Over: DEEP RIVER

100 FT W OF ROUTE 154, Middlesex, CT

Built 1990 Load: 36.6 t ADT: 1,276

OLD CLINTON ROAD

Fair

Over: PATCHOGUE RIVER

750 FEET N OF U.S.ROUTE 1, Middlesex, CT

Built 1976 Load: 37.3 t ADT: 3,305

ROUTE 9 SOUTHBOUND

Fair

Over: WEST BRIDGE STREET

0.2 MI N OF ROUTE 80, Middlesex, CT

Built 1967 Load: 37.6 t ADT: 13,900

ROUTE 9 SB RAMP16

Fair

Over: WEST BRIDGE STREET

350 FT N OF ROUTE 80, Middlesex, CT

Built 1967 Load: 37.6 t ADT: 1,850

ROUTE 66

Fair

Over: P & W RAILROAD

INT RTE 66 & RTE 17, Middlesex, CT

Built 1938 Load: 38.2 t ADT: 16,000

ROUTE 9 NORTHBOUND

Fair

Over: FILLEY ROAD

0.5 MI S BEAVER MEADOW RD, Middlesex, CT

Built 1966 Load: 39.0 t ADT: 15,600

ROUTE 9 SOUTHBOUND

Fair

Over: MATTABESSET RIVER

0.28 MI NORTH OF ROUTE 66, Middlesex, CT

Built 1960 Load: 39.5 t ADT: 34,600

INTERSTATE-91 SB

Fair

Over: NORTH ROAD

0.68 MI NORTH OF RTE 372, Middlesex, CT

Built 1965 Load: 39.9 t ADT: 58,900

WESLEY AVENUE

Fair

Over: PATCHOGUE RIVER

500 FT N OF US ROUTE 1, Middlesex, CT

Built 1991 Load: 40.0 t ADT: 300

ROUTE 9 NORTHBOUND

Fair

Over: HUBBARD ROAD

1.0 MI S OF ROUTE 81, Middlesex, CT

Built 1966 Load: 40.1 t ADT: 15,600

ROUTE 9 SOUTHBOUND

Fair

Over: CEDAR LAKE ROAD

3/4 MI. NO OF CHESTER TL, Middlesex, CT

Built 1967 Load: 40.1 t ADT: 15,500

ROUTE 9 SOUTHBOUND

Fair

Over: TURKEY HILL ROAD

0.6 MI N OF ROUTE 82, Middlesex, CT

Built 1967 Load: 40.2 t ADT: 15,500

RUSSELL STREET

Fair

Over: SUMNER BROOK

150 FT W OF E MAIN ST, Middlesex, CT

Built 1935 Load: 40.2 t ADT: 3,366

ROUTE 9 NORTHBOUND

Fair

Over: FLORAL PARK ROAD

0.7 MI N OF I-95, Middlesex, CT

Built 1966 Load: 40.6 t ADT: 14,400

ROUTE 3

Fair

Over: COGINCHAUG RIVER

0.2 MI NORTH OF JCT RT 66, Middlesex, CT

Built 1974 Load: 40.8 t ADT: 14,700

ROUTE 9 NORTHBOUND

Fair

Over: WEST BRIDGE STREET

0.2 MI NORTH OF ROUTE 80, Middlesex, CT

Built 1967 Load: 40.8 t ADT: 13,900

ROUTE 154

Fair

Over: BIBLE ROCK BROOK

0.7 MI S OF SSR 410, Middlesex, CT

Built 1939 Load: 40.8 t ADT: 17,500

INTERSTATE 95 SOUT

Fair

Over: CONNECTICUT RV, FERRY RD

.72 MI. W. OF ROUTE 156, Middlesex, CT

Built 1993 Load: 40.8 t ADT: 36,400

INTERSTATE-91 SB

Fair

Over: SMITH STREET

1.49 MI SOUTH OF RTE 372, Middlesex, CT

Built 1965 Load: 41.0 t ADT: 53,400

ROUTE 153

Fair

Over: AMTRAK RAILROAD

0.3 MI S OF I-95, Middlesex, CT

Built 1933 Load: 41.2 t ADT: 6,200

ROUTE 17

Fair

Over: ALLYNS BROOK

0.6 MI N. OF ROUTE 79, Middlesex, CT

Built 1995 Load: 41.2 t ADT: 15,200

ROUTE 9 NORTHBOUND

Fair

Over: CEDAR GROVE TERRACE

0.5 MI S OF ROUTE 153, Middlesex, CT

Built 1966 Load: 41.3 t ADT: 17,100

ROUTE 9 NORTHBOUND

Fair

Over: CEDAR LAKE ROAD

3/4MI NO OF CHESTER LINE, Middlesex, CT

Built 1966 Load: 41.6 t ADT: 15,500

MILLER ROAD

Fair

Over: COGINCHAUG RIVER

0.4 MILES EAST OF RTE 147, Middlesex, CT

Built 1936 Load: 41.7 t ADT: 864

WILCOX STREET

Fair

Over: SUMNER BROOK

0.2 MI E OF MILLBROOK RD, Middlesex, CT

Built 2010 Load: 41.7 t ADT: 338

ROUTE 16

Fair

Over: SALMON RIVER

5.3 MI E OF ROUTE 66, Middlesex, CT

Built 1932 Load: 42.4 t ADT: 6,800

HIGH STREET

Fair

Over: P & W RAILROAD

0.3 MI N OF ROUTE 66, Middlesex, CT

Built 1982 Load: 42.5 t ADT: 3,166

US ROUTE 1

Fair

Over: MENUNKETESUCK RIVER

1.8 MI S OF ROUTE 153, Middlesex, CT

Built 2003 Load: 42.6 t ADT: 6,700

INTERSTATE-95

Fair

Over: INDIAN LAKE

0.2 MI N OF ROUTE 81, Middlesex, CT

Built 1957 Load: 42.8 t ADT: 60,600

ROUTE 9 SOUTHBOUND

Fair

Over: CANDLEWOOD HILL RD & BRK

0.5 MI W. OF ROUTE 154, Middlesex, CT

Built 1965 Load: 42.8 t ADT: 17,300

INTERSTATE-91 SB

Fair

Over: MATTABESSET RIVER

0.1 MI S OF ROUTE 372, Middlesex, CT

Built 1965 Load: 43.4 t ADT: 53,400

Related

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