Total Bridges
4,277
Public highway bridges in Connecticut
State profile · Below national median SD
Connecticut bridge safety
Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Connecticut — drawn straight from the FHWA National Bridge Inventory.
- 4,277
- Public bridges
- 24.0%
- Good condition
- 4.0%
- Poor condition
- 4.0%
- Structurally deficient
Good Condition
24.0%
1,025 bridges rated 7-9
-26.0pp vs 50% benchmark
Poor Condition
4.0%
169 bridges rated 0-4
Structurally Deficient
4.0%
169 bridges flagged for repair priority
-3.0pp vs national avg 7.0%
Connecticut vs national bridge condition
Connecticut — Good condition share 24.0%
National avg
Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).
Connecticut — Structurally deficient share 13.2%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.
Condition Distribution
Bridge inventory deck-condition mix — Connecticut (FHWA NBI)
Connecticut vs nearby ranks
Adjacent states on the structurally deficient leaderboard (lower share = better)
States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below Connecticut on the same metric.
Bridges Needing Most Attention in Connecticut
Six lowest-condition bridges in Connecticut, ranked by composite NBI rating. Each is inspected at least every 24 months.
SHERMAN STREET
Structurally DeficientOver: YANTIC RIVER
1 MILE WEST ROUTE 2, New London, CT
Built 1920 Load: 3.9 t
RIVER BANK ROAD
Structurally DeficientOver: EAST BRANCH MIANUS RIVER
0.8 MI N OF ROUTE 15, Fairfield, CT
Built 1957 Load: 8.1 t ADT: 1,500
TRACY ROAD #1
PoorOver: KITT BROOK
0.5 MI SOUTH OF ROUTE 14, Windham, CT
Built 1928 Load: 8.7 t ADT: 176
ROUTE 136
PoorOver: SAUGATUCK RIVER
BETWEEN I-95 EXIT 17 & 18, Fairfield, CT
Built 1870 Load: 10.0 t ADT: 14,500
KENSINGTON ROAD
PoorOver: MATTABESSET RIVER
0.2 MI S OF ROUTE 372, Hartford, CT
Built 1958 Load: 10.0 t ADT: 4,200
SR 664
PoorOver: SNAKE MEADOW BROOK
3 MI NORTH OF ROUTE 14, Windham, CT
Built 1925 Load: 11.3 t ADT: 600
All Bridges in Connecticut
LONG HILL ROAD
UnknownOver: INTERSTATE-95
0.8 MI N OF ROUTE 81, Middlesex, CT
Built 1957 ADT: 50,900
CHAPMAN MILLPOND R
UnknownOver: INTERSTATE-95
0.3 MI N OF ROUTE 145, Middlesex, CT
Built 1957 ADT: 50,900
ROUTE 145
UnknownOver: INTERSTATE-95
2.4 MI S OF ROUTE 153, Middlesex, CT
Built 1957 ADT: 46,100
WILLARD AVENUE
UnknownOver: INTERSTATE-95
2.0 MI N OF ROUTE 145, Middlesex, CT
Built 1958 ADT: 50,800
ROUTE 153 (ESSEX R
UnknownOver: INTERSTATE-95
I-95 EXIT NO. 65, Middlesex, CT
Built 1957 ADT: 45,000
ROUTE 166
UnknownOver: INTERSTATE-95
I-95 EXIT NO. 66, Middlesex, CT
Built 1957 ADT: 48,400
INTERSTATE-95
UnknownOver: ROUTE 154
1.3 MI S OF ROUTE 9, Middlesex, CT
Built 1957 ADT: 13,800
INTERSTATE-95
UnknownOver: SR 628 {SPRING BROOK RD}
0.6 MI S OF ROUTE 9, Middlesex, CT
Built 1957 ADT: 5,000
ROUTE 66
UnknownOver: CONN RIVER RTE 9 P&W RR
0.25 MI W OF ROUTE 9, Middlesex, CT
Built 1938 ADT: 72,900
ROUTE 9 NORTHBOUND
UnknownOver: ROUTE 9 RAMPS 31 & 32
ROUTE 9 AT EXIT 10, Middlesex, CT
Built 1959 ADT: 300
ROUTE 9 NORTHBOUND
UnknownOver: ROUTE 155
2.49 MI NO OF HADDAM TL, Middlesex, CT
Built 1959 ADT: 9,400
ROUTE 9 SOUTHBOUND
UnknownOver: ROUTE 155
2.50 MI NO OF HADDAM TL, Middlesex, CT
Built 1959 ADT: 9,400
SAYBROOK ROAD
UnknownOver: ROUTE 9
3.25MI NORTH OF HADDAM TL, Middlesex, CT
Built 1959 ADT: 44,200
BOW LANE
UnknownOver: ROUTE 9
1.9 MI SOUTH OF ROUTE 66, Middlesex, CT
Built 1958 ADT: 42,200
ROBERTS STREET
UnknownOver: ROUTE 9
1.7 MI SOUTH OF ROUTE 66, Middlesex, CT
Built 1958 ADT: 42,200
SILVER STREET
UnknownOver: ROUTE 9
1.5 M SOUTH OF ROUTE 66, Middlesex, CT
Built 1958 ADT: 39,900
WALNUT STREET
UnknownOver: ROUTE 9
.28MI S OF JCT NB RTE 17, Middlesex, CT
Built 1958 ADT: 49,200
ROUTE 17 NB
UnknownOver: ROUTE 9
1.17 MILES FROM RTE 66, Middlesex, CT
Built 1955 ADT: 4,700
AMTRAK NE CORRIDOR
UnknownOver: ROUTE 81
320 FT N. OF US ROUTE 1, Middlesex, CT
Built 1900 ADT: 7,400
P & W RAILROAD
UnknownOver: ROUTE 157
750 FT N OF ROUTE 68, Middlesex, CT
Built 1925 ADT: 4,200
ROUTE 82
UnknownOver: ROUTE 9
EXIT 7 RTE 9 TO RTE 82, Middlesex, CT
Built 1971 ADT: 29,700
ROUTE 9 SOUTHBOUND
UnknownOver: ROUTE 9 RAMPS 31 & 32
AT EXIT 10 - AIRCRAFT RD., Middlesex, CT
Built 1959 ADT: 4,900
ROUTE 66 EASTBOUND
UnknownOver: ROUTE 66 RAMP 004
AT EXIT 13 WESTBOUND, Middlesex, CT
Built 1965 ADT: 2,700
COUNTRY CLUB ROAD
UnknownOver: INTERSTATE 91
2.16 MI N OF MERIDEN TL, Middlesex, CT
Built 1965 ADT: 104,700
INTERSTATE-91 SB
UnknownOver: ROUTE 372
I-91 OVER ROUTE 372, Middlesex, CT
Built 1965 ADT: 20,500
INTERSTATE-91 NB
UnknownOver: ROUTE 372
1.55 MI SOUTH OF ROUTE 9, Middlesex, CT
Built 1965 ADT: 17,500
INTERSTATE-91 SB
UnknownOver: ROUTE 9 SB & I-91 TR 818
1.5 MI N ROUTE 372, Middlesex, CT
Built 1965 ADT: 28,300
ROUTE 9 SOUTHBOUND
UnknownOver: INTERSTATE-91 NORTHBOUND
1.6 MI N OF ROUTE 372, Middlesex, CT
Built 1965 ADT: 110,100
INTERSTATE-91 SB
UnknownOver: ROUTE 9 NORTHBOUND
APROX 2 MI.N MIDDLETOWNTL, Middlesex, CT
Built 1965 ADT: 19,000
I-91 SB TR 823
UnknownOver: I-91 NORTHBOUND
1.7 N OF ROUTE 372, Middlesex, CT
Built 1965 ADT: 58,000
ROUTE 9 SOUTHBOUND
UnknownOver: INTERSTATE-91 NB TR 818
1.9 MI S OF ROUTE 372, Middlesex, CT
Built 1965 ADT: 6,200
RT9 NB& I-91 TR821
UnknownOver: I-91 NB & I-91 TR823
.23 MI SO OF JCT I-91 SB, Middlesex, CT
Built 1965 ADT: 58,000
ROUTE 9 RAMP 028
UnknownOver: ROUTE 81
0.2 MI. N OF RTE 9 EXIT-9, Middlesex, CT
Built 1965 ADT: 7,500
ROUTE 9 SOUTHBOUND
UnknownOver: ROUTE 81 & PONSET BROOK
0.5 MI S OF NB EXIT #9, Middlesex, CT
Built 1966 ADT: 6,100
ROUTE 9 NORTHBOUND
UnknownOver: ROUTE 81 & PONSET BROOK
0.5 MI S OF NB EXIT 9, Middlesex, CT
Built 1966 ADT: 6,100
CHRISTIAN HILL RD
UnknownOver: ROUTE 9
2.0 MI N OF ROUTE 81, Middlesex, CT
Built 1965 ADT: 34,800
ROUTE 9 SOUTHBOUND
UnknownOver: ROUTE 154
1.5 MI N OF I-95, Middlesex, CT
Built 1966 ADT: 7,600
ROUTE 9 NORTHBOUND
UnknownOver: ROUTE 154
1.5 MI N OF I-95, Middlesex, CT
Built 1966 ADT: 9,100
ROUTE 9 SOUTHBOUND
UnknownOver: ROUTE 153
275 FT S OF ROUTE 154, Middlesex, CT
Built 1966 ADT: 6,600
ROUTE 9 NORTHBOUND
UnknownOver: ROUTE 153 & ROUTE 154
3.1 MI S OF ROUTE 80, Middlesex, CT
Built 1966 ADT: 6,600
ROUTE 9 SOUTHBOUND
UnknownOver: ROUTE 154(MIDDLESEX TPK)
3.0 MI S OF ROUTE 80, Middlesex, CT
Built 1966 ADT: 6,400
ROUTE 9 SOUTHBOUND
UnknownOver: RT 154&VALLEY RR&WARD BK
ROUTE 9 EXT NO. 4, Middlesex, CT
Built 1967 ADT: 5,800
ROUTE 9 NORTHBOUND
UnknownOver: RT 154,VALLEY RR,WARD BK
ROUTE 9 EXIT NO. 4, Middlesex, CT
Built 1967 ADT: 5,800
DENNISON ROAD
UnknownOver: ROUTE 9
0.3 MI N OF ROUTE 154, Middlesex, CT
Built 1967 ADT: 34,000
WIG HILL ROAD
UnknownOver: ROUTE 9
0.46 MI N OF MAIN ST UP, Middlesex, CT
Built 1968 ADT: 33,300
ROUTE 9 SOUTHBOUND
UnknownOver: ROUTE 80 (ELM STREET)
ROUTE 9 EXIT NO. 5, Middlesex, CT
Built 1968 ADT: 4,900
ROUTE 9 NORTHBOUND
UnknownOver: ROUTE 80 (ELM STREET)
ROUTE 9 EXIT NO. 5, Middlesex, CT
Built 1968 ADT: 4,900
ROUTE 9 NORTHBOUND
UnknownOver: ROUTE 148 (WEST MAIN ST)
ROUTE 9 EXIT NO. 6, Middlesex, CT
Built 1967 ADT: 4,900
ROUTE 9 SOUTHBOUND
UnknownOver: ROUTE 148 (WEST MAIN ST)
ROUTE 9 EXIT NO. 6, Middlesex, CT
Built 1967 ADT: 4,900
ROUTE 9 SOUTHBOUND
UnknownOver: RTE 9 RAMP 043 & SR 901
AT END OF RT 99, Middlesex, CT
Built 1967 ADT: 3,800
Showing 551-600 of 4,277 bridges
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.
Understanding Bridge Conditions
How FHWA rates bridge condition on a 0-9 scale.
Check Your Daily Bridges
How to look up bridge condition data for bridges on your route.
Read our methodology — how this data is sourced, computed, and verified.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |