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

NORTH MAIN STREET

Good

Over: GREAT BROOK

0.3 MI N OF ROUTE 148, CT

Built 2001 Load: 32.7 t ADT: 800

CARTER HILL ROAD

Good

Over: MENUNKETESUCK RIVER

335 FT S OF VALLEY RD, CT

Built 2022 Load: 32.7 t ADT: 352

BAKER HILL ROAD

Good

Over: TEN MILE RIVER

1320 FROM CARDS MILL, CT

Built 1900 Load: 32.7 t ADT: 184

PUCKER STREET

Good

Over: HOP RIVER

0.2 MILE NORTH OF ROUTE 6, CT

Built 2015 Load: 32.7 t ADT: 424

BREWSTER STREET

Good

Over: ASH BROOK

1.1 MILE SOUTH OF U.S. 44, CT

Built 1973 Load: 32.7 t ADT: 245

SOUTH STREET

Good

Over: SKUNGAMAUG RIVER

400 FT FR JCT BISHOP LANE, CT

Built 1997 Load: 32.7 t ADT: 850

FOLLY LANE

Good

Over: SKUNGAMAUG RIVER

400FT FR JCT NORTH RV, CT

Built 2020 Load: 32.7 t ADT: 137

SAND HILL ROAD

Good

Over: LITTLE RIVER

0.3 MI EAST OF BIGELOW RD, CT

Built 1996 Load: 32.7 t ADT: 250

GRAYVILLE ROAD 1

Good

Over: RAYMOND BROOK

APPR .5 MI W OLD COLCHSTR, CT

Built 1979 Load: 32.7 t ADT: 198

COOK HILL ROAD

Good

Over: WHETSTONE BROOK

350 SOUTH OF ROUTE 101, CT

Built 2002 Load: 32.7 t ADT: 614

MOUNT ARCHER ROAD

Good

Over: EIGHT MILE RIVER

0.2 MI W OF ROUTE 156, CT

Built 1966 Load: 32.7 t ADT: 350

NEW CITY ROAD

Good

Over: NEW CITY BROOK

0.4 MILE NORTH OF RTE 19, CT

Built 2008 Load: 32.7 t ADT: 450

W DAYTON HILL RD

Good

Over: MUDDY RIVER

0.1 MI. W OF ROUTE 150, CT

Built 2007 Load: 32.7 t ADT: 985

COOPER STREET

Good

Over: HARBOR BROOK

430 FT E OF ROUTE 71, CT

Built 2021 Load: 32.7 t ADT: 1,275

SAW MILL ROAD

Good

Over: WEST RIVER

425 FT N OF HUBBARD RD, CT

Built 2021 Load: 32.7 t ADT: 369

FLAT MEADOW ROAD

Good

Over: WEST RIVER

330 FT W OF ROUTE 77, CT

Built 1999 Load: 32.7 t ADT: 2,700

BURR STREET

Good

Over: TUTTLE BROOK

100 W OF GERRISH AVENUE, CT

Built 1978 Load: 32.7 t ADT: 2,209

BAGBURN HILL ROAD

Good

Over: HALFWAY RIVER

0.9 MI N OF ROUTE 111, CT

Built 2002 Load: 32.7 t ADT: 388

BROCK STREET

Good

Over: PEQUONNOCK RIVER

250 FT E OF ROUTE 127, CT

Built 1979 Load: 32.7 t ADT: 1,009

ASTORIA AVENUE

Good

Over: ROOSTER RIVER OVERFLOW

0.2 MI E OF ROUTE 59, CT

Built 2000 Load: 32.7 t ADT: 310

HICKOCK ROAD

Good

Over: SILVERMINE RIVER

1 MI EAST OF VALLEY RD, CT

Built 2012 Load: 32.7 t ADT: 333

DIAMOND HILL ROAD

Good

Over: SAUGATUCK RIVER

500 WEST OF ROUTE 53, CT

Built 2001 Load: 32.7 t ADT: 895

GEORGES HILL ROAD

Good

Over: POND BROOK

AT JCT OF POND BROOK RD., CT

Built 1975 Load: 32.7 t ADT: 133

LAKEMERE DRIVE

Good

Over: LEE BROOK

2 MI S TROOP A BARRACKS, CT

Built 2001 Load: 32.7 t ADT: 630

CATLIN ROAD

Good

Over: LAKE HARWINTON DAM

N OF 118 OFF DAVIS ROAD, CT

Built 2009 Load: 32.7 t ADT: 174

RIVER ROAD

Good

Over: LITTLE JACKS BROOK

BTWN HIGH BR RD& SOUTH ST, CT

Built 1934 Load: 32.7 t ADT: 518

THORPE STREET EXT

Good

Over: BOGGS POND BROOK

0.1 E OF ROUTE 39, CT

Built 2003 Load: 32.7 t ADT: 3,140

CHESTNUT ST & MNRR

Good

Over: STILL RIVER

0.8 MILE EAST OF ROUTE 53, CT

Built 1974 Load: 32.7 t ADT: 6,430

WILSON ROAD

Good

Over: GULF STREAM

INTERSECTION TOLLGATE RD., CT

Built 2001 Load: 32.7 t ADT: 190

BILTMORE STREET

Good

Over: SANDY BROOK

400 FT WEST OF ROUTE 175, CT

Built 1956 Load: 32.7 t ADT: 650

BERLIN STREET

Good

Over: MATTABESSET RIVER

0.8 MI E OF ROUTE 372, CT

Built 1981 Load: 32.7 t ADT: 1,339

WOODLAND STREET

Good

Over: ROARING BROOK

500 (S) OF INT HOPEWELL, CT

Built 1983 Load: 32.7 t ADT: 1,589

NORTH MAIN STREET

Good

Over: GREAT BROOK

0.3 MI N OF ROUTE 148, CT

Built 1983 Load: 32.7 t ADT: 800

MAIN ST. #2

Good

Over: BROOK

50 E OF CHENEY ST, CT

Built 1983 Load: 32.7 t ADT: 3,442

OLD LANE ROAD

Good

Over: MILL RIVER

0.5 MI E OF ROUTE 10, CT

Built 1985 Load: 32.7 t ADT: 306

HOLLISTER DRIVE

Good

Over: ROARING BROOK

0.2 MI EAST OF ROUTE 177, CT

Built 1985 Load: 32.7 t ADT: 630

HATHEWAY ROAD

Good

Over: BROAD BROOK

0.3 MILE NORTH OF RTE 140, CT

Built 1986 Load: 32.7 t ADT: 917

TRUMBULL STREET

Good

Over: BANTAM RIVER

50 FT S. OF ROUTE 202, CT

Built 1986 Load: 32.7 t ADT: 125

DEPOT ROAD

Good

Over: CANDLEWOOD HILL BROOK

30 FT N OF ROUTE 154, CT

Built 1986 Load: 32.7 t ADT: 469

BOULDER DELL ROAD

Good

Over: BIBLE ROCK BROOK

100 FT E OF ROUTE 154, CT

Built 1986 Load: 32.7 t ADT: 57

MOUNTAIN ROAD #1

Good

Over: TROUT BROOK

200 N GLOUCESTER LANE, CT

Built 1986 Load: 32.7 t ADT: 6,226

ROUTE 67

Good

Over: LITTLE RIVER

5.3 MI W OF ROUTE 8, CT

Built 1986 Load: 32.7 t ADT: 10,100

PATCH STREET

Good

Over: PADANARAM BROOK

0.1 MI E OF ROUTE 53, CT

Built 1987 Load: 32.7 t ADT: 1,255

US ROUTE 7

Good

Over: GEOTZEN BROOK

1.2 MI N OF ROUTE 33, CT

Built 1985 Load: 32.7 t ADT: 17,500

PATTEN ROAD

Good

Over: MUDDY RIVER

Rte 22 to Mill Road, CT

Built 1987 Load: 32.7 t ADT: 906

JEWETT STREET

Good

Over: BEAVER BROOK

0.7 MI N OF ROUTE 243, CT

Built 2001 Load: 32.7 t ADT: 2,200

FILLOW STREET

Good

Over: FIVE MILE RIVER

850 FT N WEST NORWALK AVE, CT

Built 1987 Load: 32.7 t ADT: 1,786

ROUTE 272

Good

Over: HALL MEADOW BROOK

AT GOSHEN TOWN LINE, CT

Built 1987 Load: 32.7 t ADT: 1,000

US ROUTE 6

Good

Over: POND BROOK

INTERSECTION ROUTES 6&25, CT

Built 1988 Load: 32.7 t ADT: 10,900

NONNEWAUG ROAD

Good

Over: EAST SPRING BROOK

50 EAST OF PORTER HILL RD, CT

Built 1988 Load: 32.7 t ADT: 3,400

Showing 3,101-3,150 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.