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)

RIDGE ROAD

Fair

Over: SUMNER BROOK

290 FT W OF MAIN ST EXT, Middlesex, CT

Built 1938 Load: 99.9 t ADT: 3,735

DENNISON ROAD

Fair

Over: FALLS RIVER

0.2 MI N OF ROUTE 154, Middlesex, CT

Built 1964 Load: 99.9 t ADT: 1,314

BEAVER MEADOW ROAD

Good

Over: BEAVER MEADOW BROOK

0.7 MI W OF ROUTE 9, Middlesex, CT

Built 2022 Load: 13.6 t ADT: 1,000

VILLAGE STREET

Good

Over: DEEP RIVER

500 FT W OF ROUTE 154, Middlesex, CT

Built 2012 Load: 20.7 t ADT: 966

ROUTE 147

Good

Over: COGINCHAUG RIVER

0.7 MI S OF ROUTE 157, Middlesex, CT

Built 2013 Load: 28.8 t ADT: 6,000

ROUTE 9 RAMP 027

Good

Over: PONSET BROOK

RTE. 9 SB EXIT 9 OFF RAMP, Middlesex, CT

Built 1965 Load: 30.8 t ADT: 4,000

ROUTE 9 RAMP 026

Good

Over: PONSET BROOK

RTE. 9 NB EXIT 9 OFF RAMP, Middlesex, CT

Built 1965 Load: 30.8 t ADT: 800

ROUTE 81

Good

Over: PONSET BROOK

0.2 MI S OF ROUTE 154, Middlesex, CT

Built 1983 Load: 30.8 t ADT: 3,300

SPRING STREET

Good

Over: DEEP RIVER

150 FT W OF ROUTE 154, Middlesex, CT

Built 1982 Load: 30.8 t ADT: 1,374

SILVER BIRCH LANE

Good

Over: BROOK

0.4 MILE WEST OF ROUTE 81, Middlesex, CT

Built 1980 Load: 30.8 t ADT: 780

ROUTE 151

Good

Over: SALMON RIVER

0.4 MILES FROM JCT 196, Middlesex, CT

Built 2008 Load: 31.4 t ADT: 3,700

CHATFIELD HOLLOW R

Good

Over: CHATFIELD HOLLOW BROOK

0.5 MI N OF PARK ENTRANC, Middlesex, CT

Built 2002 Load: 31.9 t ADT: 306

US ROUTE 1

Good

Over: AMTRAK RAILROAD

.25 MILES SOUTH OF I95, Middlesex, CT

Built 1976 Load: 32.1 t ADT: 19,500

ROUTE 9 SOUTHBOUND

Good

Over: KELSEY HILL ROAD

0.7 MI N OF ROUTE 154, Middlesex, CT

Built 1967 Load: 32.4 t ADT: 16,600

NORTH MAIN STREET

Good

Over: GREAT BROOK

0.3 MI N OF ROUTE 148, Middlesex, CT

Built 2001 Load: 32.7 t ADT: 800

CARTER HILL ROAD

Good

Over: MENUNKETESUCK RIVER

335 FT S OF VALLEY RD, Middlesex, CT

Built 2022 Load: 32.7 t ADT: 352

NORTH MAIN STREET

Good

Over: GREAT BROOK

0.3 MI N OF ROUTE 148, Middlesex, CT

Built 1983 Load: 32.7 t ADT: 800

MAIN ST. #2

Good

Over: BROOK

50 E OF CHENEY ST, Middlesex, CT

Built 1983 Load: 32.7 t ADT: 3,442

DEPOT ROAD

Good

Over: CANDLEWOOD HILL BROOK

30 FT N OF ROUTE 154, Middlesex, CT

Built 1986 Load: 32.7 t ADT: 469

BOULDER DELL ROAD

Good

Over: BIBLE ROCK BROOK

100 FT E OF ROUTE 154, Middlesex, CT

Built 1986 Load: 32.7 t ADT: 57

MILL STREET

Good

Over: LONG HILL BROOK

0.2 MI N. OF ROUTE 17, Middlesex, CT

Built 2001 Load: 32.7 t ADT: 1,544

BOARDMAN LANE NO 1

Good

Over: SAWMILL BROOK

0.3 MI W OF MIDDLE STREET, Middlesex, CT

Built 1981 Load: 32.7 t ADT: 168

ROUTE 68

Good

Over: COGINCHAUG RIVER

0.5 MILE WEST OF ROUTE 17, Middlesex, CT

Built 1989 Load: 32.7 t ADT: 8,900

HERITAGE BOULEVARD

Good

Over: MINER BROOK

400 FT W OF ROUTE 217, Middlesex, CT

Built 1986 Load: 32.7 t ADT: 330

GRAPEVINE ROAD

Good

Over: CANDLEWOOD HILL BROOK

0.1 MI N CANDLEWOOD H.RD, Middlesex, CT

Built 1990 Load: 32.7 t ADT: 254

ROUTE 148

Good

Over: PATTACONK BROOK

0.2 MI W OF ROUTE 9, Middlesex, CT

Built 1991 Load: 32.7 t ADT: 4,800

NORTH MAIN STREET

Good

Over: GREAT BROOK

540 FT N OF ROUTE 148, Middlesex, CT

Built 1990 Load: 32.7 t ADT: 800

HAYWARDVILLE ROAD

Good

Over: EIGHT MILE RIVER

0.2 MI E OF SSR 434, Middlesex, CT

Built 1970 Load: 32.7 t ADT: 1,000

WILCOX HILL ROAD

Good

Over: RESERVOIR BROOK

200 FT. EAST OF ROUTE 17, Middlesex, CT

Built 1995 Load: 32.7 t ADT: 228

MAIN STREET

Good

Over: POCOTOPAUG CREEK

0.5 MI N OF ROUTE 16, Middlesex, CT

Built 2009 Load: 32.7 t ADT: 3,646

ROUTE 154

Good

Over: CHESTER CREEK

320 FT S OF ROUTE 148, Middlesex, CT

Built 2010 Load: 33.4 t ADT: 4,400

ROUTE 217

Good

Over: MATTABESSET RIVER

JCT OF ROUTE 372, Middlesex, CT

Built 2004 Load: 33.4 t ADT: 14,900

ROUTE 148

Good

Over: GREAT BROOK

0.7 MI W OF ROUTE 154, Middlesex, CT

Built 2012 Load: 33.4 t ADT: 1,600

FLAT ROCK PLACE

Good

Over: WETLANDS

0.4 MI E OF ROUTRE 153, Middlesex, CT

Built 1996 Load: 33.4 t ADT: 3,380

JONES HILL ROAD

Good

Over: EIGHT MILE RIVER

580 FT E OF SSR 434, Middlesex, CT

Built 2006 Load: 34.0 t ADT: 93

DISH MILL ROAD

Good

Over: PONSET BROOK

160 FT W OF ROUTE 81, Middlesex, CT

Built 1963 Load: 34.3 t ADT: 153

FLAT ROCK PLACE

Good

Over: WETLANDS

0.2 MI EAST OF ROUTE 153, Middlesex, CT

Built 1996 Load: 35.0 t ADT: 3,518

ROUTE 154

Good

Over: FALLS RIVER

0.6 MI S OF ROUTE 9, Middlesex, CT

Built 1982 Load: 36.3 t ADT: 5,800

FLAT ROCK PLACE

Good

Over: WETLANDS

0.6 MI E OF ROUTE 153, Middlesex, CT

Built 1996 Load: 37.9 t ADT: 3,511

MAIN STREET

Good

Over: PATTACONK BROOK

55 FT S OF ROUTE 148, Middlesex, CT

Built 2016 Load: 38.2 t ADT: 1,500

ROUTE 17

Good

Over: LONG HILL BROOK

0.7 MI N OF ROUTE 155, Middlesex, CT

Built 2001 Load: 39.9 t ADT: 13,100

ROUTE 151

Good

Over: MOODUS RIVER

105 FT N OF ROUTE 149, Middlesex, CT

Built 2010 Load: 39.9 t ADT: 2,000

FLAT ROCK PLACE

Good

Over: WETLANDS

0.5 M EAST RTE 154, Middlesex, CT

Built 1996 Load: 40.2 t ADT: 3,515

WALNUT STREET

Good

Over: FALLS RIVER

90 FT S OF MAIN STREET, Middlesex, CT

Built 2018 Load: 40.8 t ADT: 963

NEHANTIC TRAIL #2

Good

Over: MUD CREEK

50' SOUTH/RED BIRD TRAIL, Middlesex, CT

Built 2003 Load: 41.5 t ADT: 268

ROUTE 155

Good

Over: SUMNER BROOK

0.7 MI W OF ROUTE 9, Middlesex, CT

Built 1936 Load: 42.1 t ADT: 9,100

PEARL STREET

Good

Over: P & W RAILROAD

1/4 MI. NORTH OF RTE.66, Middlesex, CT

Built 2009 Load: 42.5 t ADT: 2,958

ROUTE 17A

Good

Over: CARR BROOK

2.3 MI N OF ROUTE 66, Middlesex, CT

Built 2014 Load: 43.4 t ADT: 4,900

ROUTE 79

Good

Over: HAMMONASSET BROOK

0.1 MI S OF ROUTE 148, Middlesex, CT

Built 2015 Load: 43.4 t ADT: 5,800

ROUTE 9 RAMP 006

Good

Over: MUD RIVER

500 FT S OF ROUTE 153, Middlesex, CT

Built 1966 Load: 43.4 t ADT: 4,405

Related

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