State profile · Below median Poor share

Connecticut bridge safety

According to the Federal Highway Administration's 2024 National Bridge Inventory, condition ratings, load ratings, and Poor-condition shares for every public highway bridge in Connecticut.

4,365
Public bridges
27.8%
Good condition
4.7%
Poor condition

Connecticut holds 4,365 public highway bridges (#38 of 52 by inventory) with a 4.72% Poor share (#36 of 52 by Poor share).

That is 4.7% of the state's inventory, against an average of 7.5% across the 54 states and territories with Poor-rated bridges on file, which places it 17 of 54 ordered from the lowest Poor share upward. A bridge is rated Poor when its weakest applicable component scores 4 or below on the inspecting agency's 0-9 scale, so the category is a maintenance and funding signal rather than a closure order or a live crossing-safety verdict.

Inventory: FHWA NBI 2024 · last ETL August 2026

Total Bridges

4,365

Public highway bridges in Connecticut

Good Condition

27.8%

1,213 bridges rated 7-9

-22.2pp vs 50% benchmark

Poor Condition

4.7%

206 bridges whose lowest applicable component is rated 0-4

-2.8pp vs national avg 7.5%

Connecticut vs national bridge condition

Connecticut - Good condition share 27.8%
National avg

Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).

Connecticut - Poor-condition share 15.7%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.5%.

Connecticut in the national condition pattern

Each point is a state or territory in the FHWA NBI; the highlighted point is this profile.

Inventory size and Poor-condition share are different measures: Connecticut has 4,365 bridges and a 4.7% Poor-condition share in the 2024 NBI, rank #17 of 54 jurisdictions ordered from the lowest share upward. The dashed comparisons mark the national average state rate and the midpoint of the plotted inventory range; neither is a live safety or closure threshold. Scatter plot of 54 data points. 0%10%20%30%40% 0k20k40k60k Public bridges in inventory (thousands) Poor-condition share (%) CT, Public bridges in inventory (thousands): 4.4k · Poor-condition share (%): 4.72%AL, Public bridges in inventory (thousands): 16.2k · Poor-condition share (%): 3.35%AK, Public bridges in inventory (thousands): 1.7k · Poor-condition share (%): 7.89%AZ, Public bridges in inventory (thousands): 8.6k · Poor-condition share (%): 1.15%AR, Public bridges in inventory (thousands): 13k · Poor-condition share (%): 5.43%CA, Public bridges in inventory (thousands): 25.8k · Poor-condition share (%): 5.91%CO, Public bridges in inventory (thousands): 9k · Poor-condition share (%): 4.82%DE, Public bridges in inventory (thousands): 0.9k · Poor-condition share (%): 1.26%DC, Public bridges in inventory (thousands): 0.3k · Poor-condition share (%): 1.95%FL, Public bridges in inventory (thousands): 13k · Poor-condition share (%): 2.79%GA, Public bridges in inventory (thousands): 15.1k · Poor-condition share (%): 1.59%GU, Public bridges in inventory (thousands): 0k · Poor-condition share (%): 12.77%HI, Public bridges in inventory (thousands): 1.2k · Poor-condition share (%): 6.53%ID, Public bridges in inventory (thousands): 4.6k · Poor-condition share (%): 4.9%IL, Public bridges in inventory (thousands): 26.9k · Poor-condition share (%): 9.35%IN, Public bridges in inventory (thousands): 19.5k · Poor-condition share (%): 5.22%IA, Public bridges in inventory (thousands): 23.7k · Poor-condition share (%): 19.16%KS, Public bridges in inventory (thousands): 24.9k · Poor-condition share (%): 5.26%KY, Public bridges in inventory (thousands): 14.5k · Poor-condition share (%): 7.37%LA, Public bridges in inventory (thousands): 12.7k · Poor-condition share (%): 11.48%ME, Public bridges in inventory (thousands): 2.5k · Poor-condition share (%): 15.41%MD, Public bridges in inventory (thousands): 5.5k · Poor-condition share (%): 4.56%MA, Public bridges in inventory (thousands): 5.3k · Poor-condition share (%): 8.88%MI, Public bridges in inventory (thousands): 11.4k · Poor-condition share (%): 11.27%MN, Public bridges in inventory (thousands): 13.5k · Poor-condition share (%): 4.44%MS, Public bridges in inventory (thousands): 16.7k · Poor-condition share (%): 6.03%MO, Public bridges in inventory (thousands): 24.6k · Poor-condition share (%): 8.95%MT, Public bridges in inventory (thousands): 5.2k · Poor-condition share (%): 6.81%NE, Public bridges in inventory (thousands): 15.4k · Poor-condition share (%): 7.9%NV, Public bridges in inventory (thousands): 2.1k · Poor-condition share (%): 1.14%NH, Public bridges in inventory (thousands): 2.5k · Poor-condition share (%): 7.51%NJ, Public bridges in inventory (thousands): 6.8k · Poor-condition share (%): 6.01%NM, Public bridges in inventory (thousands): 4k · Poor-condition share (%): 4.51%NY, Public bridges in inventory (thousands): 17.6k · Poor-condition share (%): 9.43%NC, Public bridges in inventory (thousands): 19.2k · Poor-condition share (%): 6.76%ND, Public bridges in inventory (thousands): 4.3k · Poor-condition share (%): 10.98%OH, Public bridges in inventory (thousands): 26.7k · Poor-condition share (%): 4.74%OK, Public bridges in inventory (thousands): 22.9k · Poor-condition share (%): 7.7%OR, Public bridges in inventory (thousands): 8.3k · Poor-condition share (%): 4.61%PA, Public bridges in inventory (thousands): 23.3k · Poor-condition share (%): 12.58%PR, Public bridges in inventory (thousands): 2.4k · Poor-condition share (%): 13.92%RI, Public bridges in inventory (thousands): 0.8k · Poor-condition share (%): 15.2%SC, Public bridges in inventory (thousands): 9.5k · Poor-condition share (%): 6.17%SD, Public bridges in inventory (thousands): 5.9k · Poor-condition share (%): 16.36%TN, Public bridges in inventory (thousands): 20.4k · Poor-condition share (%): 4.41%TX, Public bridges in inventory (thousands): 56.7k · Poor-condition share (%): 1.23%UT, Public bridges in inventory (thousands): 3.1k · Poor-condition share (%): 2.91%VT, Public bridges in inventory (thousands): 2.9k · Poor-condition share (%): 2.9%VI, Public bridges in inventory (thousands): 0k · Poor-condition share (%): 29.17%VA, Public bridges in inventory (thousands): 14.1k · Poor-condition share (%): 3.39%WA, Public bridges in inventory (thousands): 8.5k · Poor-condition share (%): 5.45%WV, Public bridges in inventory (thousands): 7.3k · Poor-condition share (%): 18.64%WI, Public bridges in inventory (thousands): 14.4k · Poor-condition share (%): 6.52%WY, Public bridges in inventory (thousands): 3.1k · Poor-condition share (%): 6.51%
Inventory size and Poor-condition share are different measures: Connecticut has 4,365 bridges and a 4.7% Poor-condition share in the 2024 NBI, rank #17 of 54 jurisdictions ordered from the lowest share upward. The dashed comparisons mark the national average state rate and the midpoint of the plotted inventory range; neither is a live safety or closure threshold.

Connecticut vs all states by public bridge inventory

Where this state's FHWA NBI public-highway bridge count sits among every state and territory on PlainBridges

4,365 38th of 54 higher than 16 of 54 states

States and territories, banded by public bridge inventory size

Each bar is a band; taller bars hold more states. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source FHWA National Bridge Inventory · 2024

Read the rank neighborhood for Connecticut

The highlighted point is Connecticut: 4,365 bridges and 4.72% in Poor condition, rank #17 of 54 jurisdictions ordered from the lowest share upward. The five jurisdictions immediately above and below Connecticut on that same Poor-share ordering:

  • Maryland: 5,484 bridges · 4.56% Poor
  • Oregon: 8,305 bridges · 4.61% Poor
  • Connecticut: 4,365 bridges · 4.72% Poor
  • Ohio: 26,729 bridges · 4.74% Poor
  • Colorado: 8,965 bridges · 4.82% Poor

The full national sortable table lives on the rankings page.

Material families in Connecticut

Exclusive FHWA material families across all 4,365 bridges in this state; continuous variants fold into the parent family. Orthogonal to the Poor-share scatter above.

Who maintains Connecticut’s inventory

State agency holds 65.3% of the 4,365 public highway bridges filed under Connecticut in the 2024 NBI, the agency-of-record split for this state, not a condition verdict.

When Connecticut’s bridges were built

Pre-1950 construction accounts for 18.9% of the 4,365 bridges with a recorded original year in Connecticut. Era bands are orthogonal to the Poor-share ranking above.

Condition Distribution

Connecticut27.8%67.5%GoodFairPoor
Bridge inventory deck-condition mix - Connecticut (FHWA NBI)

Counties (0)

Connecticut vs nearby ranks

Adjacent states by Poor-condition share (lower share = better)

States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below Connecticut on the same metric.

MD

Maryland

4.56% top marginal rate
Structure
Progressive
Burden @ $100K
$5,484

OR

Oregon

4.61% top marginal rate
Structure
Progressive
Burden @ $100K
$8,305
Selected

CT

Connecticut

4.72% top marginal rate
Structure
Progressive
Burden @ $100K
$4,365

OH

Ohio

4.74% top marginal rate
Structure
Progressive
Burden @ $100K
$26,729

CO

Colorado

4.82% top marginal rate
Structure
Progressive
Burden @ $100K
$8,965

Bridges Needing Most Attention in Connecticut

Six lowest-condition bridges in Connecticut, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.

FALLS ROAD

Poor

Over: NONNEWAUG BROOK

300 E OF NONNEWAUG RD, CT

Built 1956 Load: 0.0 t ADT: 95

SHERMAN STREET

Poor

Over: YANTIC RIVER

1 MILE WEST ROUTE 2, CT

Built 1920 Load: 3.9 t

ROUTE 191

Poor

Over: SCANTIC RIVER

1.9 MI SOUTH OF RTE. 140, CT

Built 1925 Load: 5.8 t ADT: 1,500

RIVER BANK ROAD

Poor

Over: EAST BRANCH MIANUS RIVER

0.8 MI N OF ROUTE 15, CT

Built 1957 Load: 8.1 t ADT: 1,500

TRACY ROAD #1

Poor

Over: KITT BROOK

0.5 MI SOUTH OF ROUTE 14, CT

Built 1928 Load: 8.7 t ADT: 176

ROUTE 136

Poor

Over: SAUGATUCK RIVER

BETWEEN I-95 EXIT 17 & 18, CT

Built 1870 Load: 10.0 t ADT: 14,500

All Bridges in Connecticut

US ROUTE 7 NB

Fair

Over: CONNECTICUT AVE

0.6 MI N OF I-95, CT

Built 1970 Load: 41.1 t ADT: 27,400

SOUTH QUAKER LN #1

Fair

Over: TROUT BROOK

0.5 MILE NORTH OF RTE 173, CT

Built 1957 Load: 41.1 t ADT: 21,505

ROUTE 40 SB

Fair

Over: ROUTE 15 (WILBUR CROSS)

1.8 MILES NORTH OF I-91, CT

Built 1976 Load: 41.1 t ADT: 11,700

RACE HILL ROAD #1

Fair

Over: WEST RIVER

100 FT E OF ROUTE 77, CT

Built 2002 Load: 41.1 t ADT: 379

BALD HILL ROAD

Fair

Over: E BR SILVERMINE RIVER

WEST OF ROUTE 33, CT

Built 1966 Load: 41.1 t ADT: 130

FARNAM ROAD

Fair

Over: SALMON CREEK

500 W OF SALMON KILL RD, CT

Built 2001 Load: 41.1 t ADT: 400

INTERSTATE-84 EB

Fair

Over: ROUTE 30 & 83 (OVERLAP)

0.4 MI E OF MANCHESTER TL, CT

Built 1982 Load: 41.1 t ADT: 52,950

PINE ORCHARD ROAD

Fair

Over: AMTRAK RAILROAD

0.6 MI N. OF ROUTE 146, CT

Built 1988 Load: 41.1 t ADT: 1,000

US ROUTE 5 TR 804

Fair

Over: ROUTE 2 WESTBOUND

EB EXIT FROM CHARTER OAK, CT

Built 1991 Load: 41.1 t ADT: 2,700

ROUTE 315

Fair

Over: FARMINGTON RIVER

.2 MI E OF ROUTE 10 & 202, CT

Built 1992 Load: 41.1 t ADT: 7,900

INTERSTATE 91 NORT

Fair

Over: FARMINGTON RIVER

.6 MILE NORTH OF ROUTE 75, CT

Built 1958 Load: 41.2 t ADT: 64,100

ROUTE 153

Fair

Over: AMTRAK RAILROAD

0.3 MI S OF I-95, CT

Built 1933 Load: 41.2 t ADT: 6,200

NORTH WILTON ROAD

Fair

Over: SILVERMINE RIVER

500 WEST OF VALLEY ROAD, CT

Built 1956 Load: 41.2 t ADT: 1,130

WILTON ROAD

Fair

Over: WILTON POND

OVER WILTON POND @ DAM, CT

Built 1998 Load: 41.2 t ADT: 206

ROUTE 17

Fair

Over: ALLYNS BROOK

0.6 MI N. OF ROUTE 79, 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, CT

Built 1966 Load: 41.3 t ADT: 17,100

ROUTE 72

Fair

Over: POLAND RIVER

1 MILE SOUTH HARWINTON TL, CT

Built 1927 Load: 41.4 t ADT: 2,700

SR 612

Fair

Over: FITCHVILLE POND

0.5 MI NORTH OF ROUTE 2, CT

Built 2002 Load: 41.4 t ADT: 2,000

I-95 TR 803

Fair

Over: MNRR & CRESCENT ST

ROUTE I-95 SB EXIT 15, CT

Built 1970 Load: 41.4 t ADT: 16,400

MAHER ROAD

Fair

Over: INTERSTATE 95

0.3 MI S OF US ROUTE 1, CT

Built 1958 Load: 41.5 t ADT: 2,393

INTERSTATE-95

Fair

Over: EAST RIVER

2.3 MI S OF ROUTE 79, CT

Built 1957 Load: 41.5 t ADT: 54,500

INTERSTATE 84 WB

Fair

Over: ROUTE 172

EXIT 14, CT

Built 1963 Load: 41.5 t ADT: 33,900

SR 608

Fair

Over: YANTIC RIVER

AT BOZRAH TL, CT

Built 1926 Load: 41.5 t ADT: 900

ROUTE 2 RAMP 028

Fair

Over: DARK HOLLOW BROOK

ROUTE 2 WB EXIT 11 RAMP, CT

Built 1964 Load: 41.5 t ADT: 400

COUNTRY CLUB ROAD

Fair

Over: INTERSTATE 91

2.16 MI N OF MERIDEN TL, CT

Built 1965 Load: 41.5 t ADT: 5,300

INTERSTATE-91 NB

Fair

Over: AMTRAK RAILROAD

.11 MILES S OF ROUTE 22, CT

Built 1965 Load: 41.5 t ADT: 43,200

ROUTE 9 SOUTHBOUND

Fair

Over: ROUTE 154

1.5 MI N OF I-95, CT

Built 1966 Load: 41.5 t ADT: 14,100

INTERSTATE-84 WB

Fair

Over: PARK STREET

.59 MI EAST OF JCT SR 504, CT

Built 1969 Load: 41.5 t ADT: 64,800

SR 503 WESTBOUND

Fair

Over: FOREST ST & PARKING LOT

.23MI E OF JCT SISSON AVE, CT

Built 1969 Load: 41.5 t ADT: 9,100

INTERSTATE-395 NB

Fair

Over: ABANDONED RAILROAD

APPROX 1MILE SOUTH EX 100, CT

Built 1968 Load: 41.5 t ADT: 10,700

WESTFIELD ROAD

Fair

Over: ABANDONED RAILROAD

210 FT E OF ROUTE 5, CT

Built 1982 Load: 41.5 t ADT: 2,700

HALLADAY AVE WEST

Fair

Over: PHILO BROOK

120FT FR BLOSSOM ST, CT

Built 1955 Load: 41.5 t ADT: 1,261

PINNEY SCHOOL ROAD

Fair

Over: FURNACE BROOK

650 FT WEST OF ROUTE 19, CT

Built 1957 Load: 41.5 t ADT: 372

BOARDMAN ROAD

Fair

Over: HOUSATONIC RIVER

EAST OF RTE 7 JCT, CT

Built 1984 Load: 41.5 t ADT: 2,300

SR 616

Fair

Over: SHERMAN BROOK

2.5 MI E OF ROUTE 85, CT

Built 1987 Load: 41.5 t ADT: 1,800

ROUTE 9 NORTHBOUND

Fair

Over: ROUTE 15

6.3 MI SOUTH OF NEWINGTON, CT

Built 1989 Load: 41.5 t ADT: 29,200

I-84 EB HOV LANE

Fair

Over: RTE15&SILVER LA OFF RAMP

JCT OF SILVER LANE, CT

Built 1988 Load: 41.5 t ADT: 4,000

HILLSIDE STREET

Fair

Over: HOCKANUM RIVER

0.1 MILE SOUTH OF RTE. 44, CT

Built 1991 Load: 41.5 t ADT: 12,806

US ROUTE 6 WB

Fair

Over: HOP RIVER

0.5 MI EAST OF RT 6&66, CT

Built 1971 Load: 41.6 t ADT: 8,950

ROUTE 9 NORTHBOUND

Fair

Over: CEDAR LAKE ROAD

3/4MI NO OF CHESTER LINE, CT

Built 1966 Load: 41.6 t ADT: 15,500

ROUTE 8

Fair

Over: MAPLE & OAK ST RAMP 063

ROUTE 8 EXIT 27, CT

Built 1960 Load: 41.7 t ADT: 51,500

U.S. ROUTE 5 & ROU

Fair

Over: ROUTE 314 & WOLCOTT HILL

0.3 MI SOUTH OF ROUTE 99, CT

Built 1942 Load: 41.7 t ADT: 34,900

ROUTE 112

Fair

Over: SALMON CREEK

.55 MI W OF US7 JCT, CT

Built 1930 Load: 41.7 t ADT: 2,800

SIGOURNEY STREET

Fair

Over: CAPITOL AVE & AMTRAK

U I-84 (BRG 3160A&B), CT

Built 1964 Load: 41.7 t ADT: 11,900

SSR 411(WEST ST)

Fair

Over: INTERSTATE-91 & NB RAMP

.3MI (EAST) OF JCT RTE 3, CT

Built 1965 Load: 41.7 t ADT: 19,300

ROUTE 8 SOUTHBOUND

Fair

Over: ROUTE 222 -NORTH MAIN ST

AT EXIT 40, CT

Built 1966 Load: 41.7 t ADT: 12,000

MILLER ROAD

Fair

Over: COGINCHAUG RIVER

0.4 MILES EAST OF RTE 147, CT

Built 1936 Load: 41.7 t ADT: 864

HANOVER ROAD

Fair

Over: POND BROOK

500 FT SO OF POND BRK RD, CT

Built 1975 Load: 41.7 t ADT: 1,300

NICHOLS ROAD

Fair

Over: MAD RIVER

0.6 MI E OF ROUTE 69, CT

Built 1935 Load: 41.7 t ADT: 3,340

GOLDEN HILL ROAD

Fair

Over: PADANARAM BROOK

125 FT W OF ROUTE 37, CT

Built 1987 Load: 41.7 t ADT: 8,640

Showing 1,651-1,700 of 4,365 bridges

Related

All states → | National rankings → | Understanding conditions → | Retired SD term explained →
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges.

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). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.

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.

What to do with this

Use Connecticut's inventory picture to drill to a county or a specific span.

  • Browse counties in Connecticut and open the highest-Poor shares first. County list
  • See where this state sits among peers on Poor-condition share. State rankings
  • Compare this state with another jurisdiction on the same measures. State compare

NBI condition ratings are inventory snapshots, not live crossing-safety verdicts.

Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Connecticut Good/Fair/Poor shares and county rollups on this page are computed from the same NBI extract as the national boards; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.