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Bridge conditions in Fairfield County, Connecticut

862 inventoried bridges · 33 rated poor · 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

33 of the 862 bridges the federal inventory lists in Fairfield County are rated poor; the rest split 189 good and 640 fair.

33 of the 862 bridges in Fairfield County, Connecticut, are rated in poor condition (3.8%) in the 2025 National Bridge Inventory, as of August 20, 2026.
189 bridges (21.9%) are rated good and 640 (74.2%) fair.
The median Fairfield County bridge was built in 1962.
The busiest poor-rated bridge is Interstate-95 over Mill Plain Road (built 1958), carrying about 130,300 vehicles a day.

Good 21.9% · Fair 74.2% · Poor 3.8% of 862 bridges

Bridges rated poor

Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.

Bridge	Built	Vehicles/day	Condition
Interstate-95 over Mill Plain Road	1958	130,300	Poor
Interstate 684 NB over Byram River	1968	35,050	Poor
US Route 1 over West River	1950	17,600	Poor
Route 130 over Pequonnock River	1975	14,600	Poor
US Route 1 over Metro North Railroad	1933	14,300	Poor
West Broad Street over Rippowam River	1954	14,220	Poor
Route 136 over Saugatuck River	1870	12,400	Poor
Commerce Drive over Ash Creek	1950	12,090	Poor
Route 34 over Housatonic River	1919	8,800	Poor
Fairfield Avenue over Interstate-95	2015	8,600	Poor
Island Brook Ave over Pequonnock River	1938	8,240	Poor
I-95 N on Ramp 316 over Drainage	1955	7,100	Poor
Congress Street #2 over Mill River	1935	6,505	Poor
Kennedy Avenue over Still River	1964	6,500	Poor
River Road #2 over Strickland Brook	1977	6,300	Poor
West Cedar Street over Five Mile River	1910	5,120	Poor
Geo.washington Hwy over Miry Brook	1986	4,490	Poor
Lakeside Drive over North Stamford Reservoir	1936	4,220	Poor
Old Kings Highway over Stony Brook	1935	3,820	Poor
Greens Farms Road over Sasco Brook	1973	3,540	Poor
Cedar Heights Road over Rippowam River	1933	3,390	Poor
Route 53 over Saugatuck Reservoir	1939	2,600	Poor
Rings End Road over Gorhams Pond	1929	2,600	Poor
Old Road #2 over Sasco Brook	1965	2,030	Poor
Morehouse Hwy #1 over Mill River	1970	1,930	Poor
Wire Mill Road over Haviland Brook	1957	1,920	Poor
Turkey Hill Road over Housatonic Railroad	1983	948	Poor
Valley Road over Aspetuck River	1955	450	Poor
Mountain Road over Wataba Lake	1955	444	Poor
Judges Hollow Rd over Aspetuck River	1957	310	Poor
Silver Hill Road over Aspetuck River	1920	300	Poor
Michaels Way over W Branch Saugatuck River	1995	215	Poor
Depot Road over Norwalk River	1910	–	Poor

Busiest bridges in the county

Bridge	Built	Vehicles/day	Condition
Interstate-95 over Kings Hwy-goodwives Rv	1952	154,700	Fair
Interstate-95 over Bostwick Ave	2006	154,600	Fair
Interstate-95 over Bport Harbor Rt 130 Mnrr	1959	153,100	Fair
Interstate-95 over Norwalk Rv Hendricks Ave	1957	147,500	Fair
Interstate-95 over Route 136	1952	143,900	Fair
Interstate-95 over Metro North RR & Station	1958	143,300	Fair
Interstate-95 over Ferris Drive	1958	142,400	Fair
Interstate-95 over Davis Mill Pond	1958	140,400	Fair
Interstate-95 over I-95 Rmp 047/FIVE Mi Riv	1956	136,600	Fair
Interstate-95 over Keeler Avenue	1956	136,600	Fair

Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.

All of Connecticut: Connecticut bridge conditions by county · every download on the data page.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.