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

Good

Over: ROCKY RIVER

1MI SO OF JCT BOARDMAN RD, CT

Built 1988 Load: 74.6 t ADT: 9,000

ROSE HILL AVENUE

Good

Over: STILL RIVER

ADJ.TO STETSON HATFACTORY, CT

Built 2008 Load: 74.8 t ADT: 7,440

COMLY AVENUE

Good

Over: BYRAM RIVER

OVER BYRAM RIVER, CT

Built 1959 Load: 75.0 t ADT: 2,483

RTE 106 (WOLFPIT R

Good

Over: NORWALK RIVER

0.25 MI S JCT RT7 & RT33, CT

Built 1996 Load: 75.3 t ADT: 5,900

I-95 RAMP 355

Good

Over: RTE 130 WB (CT AVE)

I-95 SOUTHBOUND EXIT 29, CT

Built 1998 Load: 75.5 t ADT: 5,100

ROUTE 150

Good

Over: WHARTON BROOK

1.5 MI NE OF I-91, CT

Built 2019 Load: 76.1 t ADT: 8,500

INTERSTATE-84 EB

Good

Over: RAILS TO TRAILS PATHWAY

0.5 MILE WEST OF EXIT 66, CT

Built 2009 Load: 76.1 t ADT: 46,100

INTERSTATE-91 NB

Good

Over: ROUTE 75 (POQUONOCK AVE)

4.7 MILES NORTH OF HARTFD, CT

Built 1991 Load: 76.4 t ADT: 64,250

ROMFORD ROAD

Good

Over: SHEPAUG RIVER

0.8 MI S OF US ROUTE 202, CT

Built 2018 Load: 76.5 t ADT: 393

LOUISIANA AVENUE

Good

Over: COPPER MINE BROOK

200 FR JCT BROOK STREET, CT

Built 2021 Load: 76.8 t ADT: 4,763

MAPLE AVENUE

Good

Over: ALLYN BROOK

0.20 MI S OF ROUTE 68, CT

Built 1957 Load: 77.1 t ADT: 1,124

SAW MILL HILL ROAD

Good

Over: ROUNDS BROOK

0.5 MI WEST OF RHODE ISL., CT

Built 1984 Load: 77.7 t ADT: 340

SR 800 (MAIN ST)

Good

Over: EAST BRANCH NAUGATUCK RV

0.1 MILE SOUTH OF ROUTE 4, CT

Built 1987 Load: 78.4 t ADT: 8,300

INTERSTATE 95

Good

Over: WARREN STREET

INTERSTATE 95 EXIT 27, CT

Built 1959 Load: 79.4 t ADT: 85,600

ROUTE 80

Good

Over: FARM RIVER

1.2 MI E OF ROUTE 100, CT

Built 2020 Load: 79.7 t ADT: 12,100

BOZRAH STREET EXT

Good

Over: FITCHVILLE POND

700 FT E OF ROUTE 163, CT

Built 1930 Load: 79.7 t ADT: 2,734

SR 827 (SOUTH KENT

Good

Over: HOUSATONIC RAILROAD

1000EA OF JCT SPOONER HL, CT

Built 1935 Load: 79.8 t ADT: 900

EDWARDS STREET

Good

Over: CENTRAL NEW ENGLAND RR

350 (N) OF INT MYRTLE ST, CT

Built 1912 Load: 80.7 t ADT: 3,300

EAGLE ROAD

Good

Over: INTERNATIONAL DRIVE

EAGLE ROAD SHOPPING CNTR, CT

Built 2009 Load: 81.6 t ADT: 12,260

US ROUTE 6

Good

Over: SNAKE MEADOW BROOK

3 MI WEST OF R.I., CT

Built 1950 Load: 82.6 t ADT: 7,500

ROUTE 14

Good

Over: MOOSUP RIVER

100 WEST OF MAIN STR., CT

Built 2021 Load: 83.6 t ADT: 2,400

INTERSTATE-84 & Pl

Good

Over: BEAVER POND BROOK

.1MI E OF HARPRS FERRY RD, CT

Built 2018 Load: 83.9 t ADT: 92,200

INTERSTATE-95

Good

Over: VALLEY RAILROAD

0.1 MI S OF ROUTE 154, CT

Built 1957 Load: 84.6 t ADT: 61,700

PICKET LANE

Good

Over: HERSIG BROOK

0.1 m S of Maiden Lane, CT

Built 2022 Load: 84.6 t ADT: 1,900

US ROUTE 1

Good

Over: JORDAN BROOK

0.9 MI S OF ROUTE 156, CT

Built 1916 Load: 87.5 t ADT: 8,100

INTERSTATE-95

Good

Over: US ROUTE 1

AT I-95 EXIT NO. 55, CT

Built 2020 Load: 87.8 t ADT: 67,300

U.S. ROUTE 6

Good

Over: EAST MEADOW BROOK

0.7 MILE EAST OF ROUTE 47, CT

Built 2007 Load: 89.1 t ADT: 5,600

ROUTE 195

Good

Over: SAW MILL BROOK

400 NORTH OF WINDHAM TL, CT

Built 1973 Load: 89.8 t ADT: 8,300

US ROUTE 1

Good

Over: YELLOW MILL CHANNEL

0.6 MI N OF ROUTE 127, CT

Built 1910 Load: 91.0 t ADT: 25,800

ROUTE 341

Good

Over: MACEDONIA BROOK

2.19 MI E OF NEW YORK SL, CT

Built 2011 Load: 91.4 t ADT: 1,500

ROUTE 69

Good

Over: MAD RIVER

0.5 MI S OF ROUTE 322, CT

Built 2021 Load: 91.4 t ADT: 12,400

DERBY-MILFORD ROAD

Good

Over: WEPAWAUG RIVER

50 FT N OF ROUTE 121, CT

Built 2019 Load: 92.0 t ADT: 7,200

KNOTTER DRIVE

Good

Over: JUDD BROOK

0.2 MI S OF I-691, CT

Built 1971 Load: 92.3 t ADT: 3,638

ROUTE 9 SOUTHBOUND

Good

Over: BASS BROOK

0.2 MI (N) OF ROUTE 175, CT

Built 1991 Load: 92.4 t ADT: 23,400

ROUTE 9 NORTHBOUND

Good

Over: BASS BROOK

0.2 MILE (N) OF ROUTE 175, CT

Built 1991 Load: 92.4 t ADT: 25,300

ROUTE 189

Good

Over: WASH BROOK

0.4 MILE NORTH OF RTE 178, CT

Built 1916 Load: 94.3 t ADT: 9,200

ROUTE 4

Good

Over: W BRANCH LEADMINE BROOK

100 FT E OF TORRINGTON TL, CT

Built 1959 Load: 96.9 t ADT: 8,500

ROUTE 12

Good

Over: MILL BROOK

1.6 MI S OF ROUTE 14A EB, CT

Built 1920 Load: 97.2 t ADT: 7,200

ROUTE 94

Good

Over: BLACKLEDGE RIVER

.34 MI WEST OF HEBRON TL, CT

Built 1956 Load: 97.2 t ADT: 4,000

ROUTE 2

Good

Over: HUBBARD BROOK

0.20 (E) COMMERCE ST, CT

Built 1964 Load: 97.2 t ADT: 70,300

ROUTE 154

Good

Over: PLUM BANK CREEK

1.1 MI S OF US ROUTE 1, CT

Built 2021 Load: 97.2 t ADT: 3,600

ROUTE 341

Good

Over: BOG HOLLOW BROOK

500 E OF MACEDONIA BK RD, CT

Built 2011 Load: 97.2 t ADT: 1,300

ROUTE 12

Good

Over: PROV & WORC RAILROAD

3.8 MILES N OF ROUTE 201, CT

Built 1977 Load: 97.2 t ADT: 3,600

ARCTIC STREET

Good

Over: PEMBROKE LAKES

0.3 MI S OF US ROUTE 1, CT

Built 2017 Load: 97.2 t ADT: 2,700

INTERSTATE-84 WB

Good

Over: RAILS TO TRAILS PATHWAY

0.5 MILE WEST OF EXIT 66, CT

Built 2009 Load: 97.2 t ADT: 46,300

TOMLINSON AVENUE

Good

Over: QUINNIPIAC RIVER

600 FROM CYRENUS STREET, CT

Built 2022 Load: 97.2 t ADT: 2,790

DURKEE ROAD

Good

Over: SCANTIC RIVER

1260 FT FR JCT ROUTE 83, CT

Built 1973 Load: 97.2 t ADT: 303

HEATHERWOOD DRIVE

Good

Over: BROOK

0.2 MI E OF SUMMER HILL, CT

Built 2022 Load: 97.2 t ADT: 399

MILTON ROAD

Good

Over: MARSHEPAUG RIVER

SOUTH OF SHEAR SHOP ROAD, CT

Built 1940 Load: 97.2 t ADT: 477

BEACON VALLEY ROAD

Good

Over: BEACON HILL BROOK

0.3 MI S OF ROUTE 8, CT

Built 1933 Load: 97.2 t ADT: 2,600

Showing 4,051-4,100 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.