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

FRANCIS AVENUE

Good

Over: PIPER BROOK

450 EAST OF DAY STREET, CT

Built 1987 Load: 32.7 t ADT: 2,879

ROUTE 85

Good

Over: HARRIS BROOK

0.1 MI N OF ROUTE 82, CT

Built 1987 Load: 32.7 t ADT: 4,200

MAIN STREET

Good

Over: PORTER BROOK

.3 MI N OF GLASTONBURY TL, CT

Built 1983 Load: 32.7 t ADT: 13,300

MILL STREET

Good

Over: LONG HILL BROOK

0.2 MI N. OF ROUTE 17, 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, CT

Built 1981 Load: 32.7 t ADT: 168

CHAPMAN DRIVE

Good

Over: LATIMER BROOK

0.2 MI E OF ROUTE 161, CT

Built 1979 Load: 32.7 t ADT: 200

JEREMY HILL ROAD

Good

Over: ASSEKONK BROOK

0.1 MI S OF ROUTE 201, CT

Built 1986 Load: 32.7 t ADT: 721

ROUTE 156

Good

Over: BEAVER BROOK

1.9 MI E OF ROUTE 82, CT

Built 1988 Load: 32.7 t ADT: 2,900

FENN ROAD

Good

Over: HOP BROOK

165 FT W OF REGAN ROAD, CT

Built 1983 Load: 32.7 t ADT: 209

ROUTE 30

Good

Over: CRYSTAL LAKE BROOK

0.4 MI SOUTH OF ROUTE 190, CT

Built 1988 Load: 32.7 t ADT: 3,800

ROUTE 57

Good

Over: LEES CANAL

0.4 MI N OF ROUTE 33, CT

Built 1989 Load: 32.7 t ADT: 9,300

SR 533 (TUNNEL RD)

Good

Over: TANKERHOOSEN RIVER

.5 MI S OF INTERSTATE-84, CT

Built 1989 Load: 32.7 t ADT: 5,100

MAIN STREET

Good

Over: SALMON BROOK

1 MI. SOUTH OF ROUTE 3, CT

Built 1987 Load: 32.7 t ADT: 25,001

SHELTER ROCK ROAD

Good

Over: EAST SWAMP BROOK

DANBURY BETHEL TOWN LINE, CT

Built 1989 Load: 32.7 t ADT: 5,845

US ROUTE 44

Good

Over: BOLTON POND BROOK

0.3 MI W OF COVENTRY TL, CT

Built 1989 Load: 32.7 t ADT: 9,600

ROUTE 68

Good

Over: COGINCHAUG RIVER

0.5 MILE WEST OF ROUTE 17, CT

Built 1989 Load: 32.7 t ADT: 8,900

TUCKER HILL ROAD

Good

Over: HOP BROOK

200 FT S. OF ROUTE 64, CT

Built 1989 Load: 32.7 t ADT: 1,500

MT SANFORD ROAD #2

Good

Over: WILLOW BROOK

0.5 MI W OF ROUTE 10, CT

Built 1988 Load: 32.7 t ADT: 689

COOK HILL ROAD

Good

Over: MILL RIVER

0.5 MI E OF ROUTE 10, CT

Built 1990 Load: 32.7 t ADT: 4,600

HARRISON ROAD

Good

Over: MUNGER BROOK

0.2 MI EAST OF ROUTE 139, CT

Built 1985 Load: 32.7 t ADT: 1,135

ROUTE 17

Good

Over: BROOK

1.7 MI N OF ROUTE 22, CT

Built 1990 Load: 32.7 t ADT: 7,500

SR 660

Good

Over: BROOK

.2 MI SOUTH OF ROUTE 138, CT

Built 1990 Load: 32.7 t ADT: 800

ROUTE 2A

Good

Over: CROWLEY BROOK

1.2 MI EAST OF ROUTE 12, CT

Built 1989 Load: 32.7 t ADT: 5,200

ROUTE 77

Good

Over: MENUNKATUCK RIVER

1.8 MI N OF ROUTE 80, CT

Built 1990 Load: 32.7 t ADT: 4,600

ABBE ROAD

Good

Over: BUCKHORN BROOK

300 FEET WEST OF GRANT RD, CT

Built 1989 Load: 32.7 t ADT: 3,608

MAPLE HOLLOW ROAD

Good

Over: NORTH NEPAUG RIVER

1 MILE NORTH OF ROUTE 202, CT

Built 1987 Load: 32.7 t ADT: 540

CUTSPRING ROAD

Good

Over: PUMPKIN GROUND BROOK

0.2 MI N. OF ROUTE 15, CT

Built 1987 Load: 32.7 t ADT: 1,930

HERITAGE BOULEVARD

Good

Over: MINER BROOK

400 FT W OF ROUTE 217, CT

Built 1986 Load: 32.7 t ADT: 330

HIGGINS ROAD

Good

Over: WILLOW BROOK

0.6 MI W OF ROUTE 10, CT

Built 1991 Load: 32.7 t ADT: 3,564

AUTUMN STREET

Good

Over: PORTER BROOK

50 FEET NORTH OF SR 534, CT

Built 1991 Load: 32.7 t ADT: 2,800

EAST BARBER STREET

Good

Over: DECKERS BROOK

100 EAST OF RTE 159, CT

Built 1979 Load: 32.7 t ADT: 626

FORD AVENUE

Good

Over: DECKERS BROOK

800 WEST OF ROUTE 159, CT

Built 1979 Load: 32.7 t ADT: 633

NORTH MADISON ROAD

Good

Over: GUILFORD LAKES

0.1 MI E OF LAKESIDE DR, CT

Built 1991 Load: 32.7 t ADT: 2,023

TOWN FARM ROAD

Good

Over: WILLIAMS BROOK

01 MI S OF SHEWVILLE RD., CT

Built 1988 Load: 32.7 t ADT: 124

ROUTE 188

Good

Over: EIGHT MILE BROOK

AT SOUTHBURY TOWN LINE, CT

Built 1991 Load: 32.7 t ADT: 4,200

SR 734 (DANIELS FA

Good

Over: PEQUONNOCK RIVER

375 FT N OF ROUTE 127, CT

Built 1991 Load: 32.7 t ADT: 8,200

GRAPEVINE ROAD

Good

Over: CANDLEWOOD HILL BROOK

0.1 MI N CANDLEWOOD H.RD, CT

Built 1990 Load: 32.7 t ADT: 254

LAKESIDE DRIVE

Good

Over: GUILFORD LAKES

100 FT W BROOKSIDE RD, CT

Built 1991 Load: 32.7 t ADT: 404

ROUTE 148

Good

Over: PATTACONK BROOK

0.2 MI W OF ROUTE 9, CT

Built 1991 Load: 32.7 t ADT: 4,800

UNGER ROAD

Good

Over: HUNTS BROOK

0.1 MI E HUNTS BROOK RD, CT

Built 1991 Load: 32.7 t ADT: 1,300

SHENIPSIT LAKE RD

Good

Over: CHARTER BROOK

1.8 MI NORTH OF ROUTE 74, CT

Built 1991 Load: 32.7 t ADT: 202

NORTH MAIN STREET

Good

Over: GREAT BROOK

540 FT N OF ROUTE 148, CT

Built 1990 Load: 32.7 t ADT: 800

BROADBRIDGE AVENUE

Good

Over: BRUCE BROOK

0.7 MI N OF US ROUTE 1, CT

Built 1981 Load: 32.7 t ADT: 8,577

RTE10&FAIRVIEW AVE

Good

Over: STORM DRAIN

JCT RTE 10&ARCH &FAIRVIEW, CT

Built 1982 Load: 32.7 t ADT: 10,600

SCARBOROUGH ROAD

Good

Over: DECKERS BROOK

0.2 MILE WEST OF RTE. 159, CT

Built 1970 Load: 32.7 t ADT: 69

ROUTE 30 & 83 OVLP

Good

Over: BROOK

0.2 MI SOUTH OF VERNON TL, CT

Built 1992 Load: 32.7 t ADT: 8,400

WILDERMERE ROAD

Good

Over: BELCHER BROOK

0.4 MI E OF FOUR ROD RD, CT

Built 1980 Load: 32.7 t ADT: 255

MIDDLETOWN ROAD

Good

Over: SPRUCE BROOK

0.3 MI W OF ROUTE 372, CT

Built 1999 Load: 32.7 t ADT: 2,900

HAYWARDVILLE ROAD

Good

Over: EIGHT MILE RIVER

0.2 MI E OF SSR 434, CT

Built 1970 Load: 32.7 t ADT: 1,000

PORTER STREET

Good

Over: PORTER BROOK

250 FT. WEST OF MAIN ST#1, CT

Built 1985 Load: 32.7 t ADT: 99

Showing 3,151-3,200 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.