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

ROUTE 72

Fair

Over: PAN AM RAILROAD

.1 MILE N I-84 INTERSECT, CT

Built 1975 Load: 97.2 t ADT: 65,700

ROUTE 9

Fair

Over: PAN AM RAILROAD

0.1 MI NORTH OF BERLIN TL, CT

Built 1969 Load: 97.2 t ADT: 76,000

BROAD BROOK ROAD

Fair

Over: BROAD BROOK

0.2 MI FROM JCT RTE 140, CT

Built 1940 Load: 97.2 t ADT: 902

WEIR STREET

Fair

Over: ROARING BROOK

1 MILE SO. OF ROUTE 94, CT

Built 1974 Load: 97.2 t ADT: 1,273

SHUTTLEMEADOW ROAD

Fair

Over: QUINNIPIAC RIVER

100 FROM JCT CAROL DRIVE, CT

Built 1968 Load: 97.2 t ADT: 3,484

KING ROAD

Fair

Over: SCANTIC RIVER

.4MI WEST OF ROUTE 83 JCT, CT

Built 1949 Load: 97.2 t ADT: 654

DENNISON ROAD

Fair

Over: FALLS RIVER

300 FT E OF CURIOSITY LN, CT

Built 1968 Load: 97.2 t ADT: 1,182

ASHLAND STREET

Fair

Over: PACHAUG RIVER

0.2 MI EAST OF ROUTE 12, CT

Built 1951 Load: 97.2 t ADT: 4,131

BUDDINGTON ROAD

Fair

Over: HEMPSTEAD BROOK

800 FT S OF ROUTE 184, CT

Built 1965 Load: 97.2 t ADT: 5,141

WATERMAN ROAD

Fair

Over: PEASE BROOK

1.6 MI NORTH OF ROUTE 608, CT

Built 1965 Load: 97.2 t ADT: 1,200

BROWNS BRIDGE ROAD

Fair

Over: CHARTER BROOK

100 S O/SHENIPST LAKE RD, CT

Built 1960 Load: 97.2 t ADT: 330

YORK STREET

Fair

Over: BROOK

0.2 MI W OF US ROUTE 1, CT

Built 1968 Load: 97.2 t ADT: 264

GUNTOWN ROAD

Fair

Over: LONG MEADOW POND BROOK

AT MIDDLEBURY - OXFORD TL, CT

Built 1960 Load: 97.2 t ADT: 1,300

HOGS BACK ROAD

Fair

Over: LITTLE RIVER

50 FEET SOUTH OF ROUTE 67, CT

Built 1954 Load: 97.2 t ADT: 670

LOCUST ROAD

Fair

Over: ROCK BROOK

1.2 MI. WEST OF ROUTE 72, CT

Built 1967 Load: 97.2 t ADT: 319

INTERSTATE-384 HOV

Fair

Over: INTERSTATE-84 EASTBOUND

0.5 MILE EAST OF JCT I-84, CT

Built 1986 Load: 97.2 t ADT: 1,800

INTERSTATE-384 WB

Fair

Over: INTERSTATE-84

0.6 MILE WEST OF SR 502, CT

Built 1986 Load: 97.2 t ADT: 20,900

JUDDS BRIDGE ROAD

Fair

Over: LENEVIG BROOK

.5MI NW OF SENTRY HILL RD, CT

Built 1956 Load: 97.2 t ADT: 129

PRATT ROAD

Fair

Over: LATHROP BROOK

100 EAST OF LATHROP ROAD, CT

Built 1990 Load: 97.2 t ADT: 583

BALDWIN AVE&BEE ST

Fair

Over: SPOON SHOP BROOK

AT JCT. BEE & BALDWIN STS, CT

Built 1950 Load: 97.2 t ADT: 2,923

RIVER ROAD # 2

Fair

Over: BROOK

0.2 MI S OF AIRCRAFT ROAD, CT

Built 1970 Load: 97.2 t ADT: 53

WESLEYAN HILLS ROA

Fair

Over: LONG HILL BROOK

50 FEET WEST OF ROUTE 17, CT

Built 1960 Load: 97.2 t ADT: 2,299

ROUTE 15 NB

Fair

Over: ROUTE 5 (MAIN STREET)

1.6 MILES N OF HTFD TWNLN, CT

Built 1991 Load: 97.2 t ADT: 34,250

COLES AVENUE

Fair

Over: SCHOOLHOUSE BROOK

150 EAST OF ROUTE 173, CT

Built 1957 Load: 97.2 t ADT: 1,322

FRESHWATER BLVD

Fair

Over: FRESHWATER BROOK

0.2 MILE NORTH OF RTE 190, CT

Built 1970 Load: 97.2 t ADT: 14,793

ROUTE 82

Fair

Over: ROARING BROOK

0.2 MI W OF ROUTE 154, CT

Built 1982 Load: 97.2 t ADT: 7,600

ROUTE 17

Fair

Over: BROOK

0.8 MI N OF ROUTE 80, CT

Built 1970 Load: 97.2 t ADT: 9,800

INTERSTATE-91

Fair

Over: BROOK

3.4 MI N OF I-95, CT

Built 1965 Load: 97.2 t ADT: 120,200

SR 637

Fair

Over: CABIN BROOK

0.3 MI E OF ROUTE 11, CT

Built 1971 Load: 97.2 t ADT: 5,100

MEADOWBROOK DRIVE

Fair

Over: DRAINAGE

250FT from Bentley Drive, CT

Built 1998 Load: 97.2 t ADT: 530

CESCA LANE

Fair

Over: BALL BROOK

100 FT N OF HADDAM Q. RD, CT

Built 2000 Load: 97.2 t ADT: 208

INTERSTATE-91

Fair

Over: CONNECTICUT SOUTHERN RR

.3 MILE NORTH OF EXIT 29A, CT

Built 1958 Load: 98.0 t ADT: 95,700

INTERSTATE-95

Fair

Over: HORSENECK CREEK

NEAR EXIT 3, CT

Built 1958 Load: 99.9 t ADT: 101,800

INTERSTATE 95

Fair

Over: NOROTON RIVER

STAMFORD\DARIEN TOWN LINE, CT

Built 1958 Load: 99.9 t ADT: 123,700

INTERSTATE-95

Fair

Over: WEPAWAUG RIVER

325 FT S OF ROUTE 121, CT

Built 1958 Load: 99.9 t ADT: 113,500

INTERSTATE-95

Fair

Over: LATIMERS BROOK

0.5 MI N OF ROUTE 161, CT

Built 1958 Load: 99.9 t ADT: 72,700

INTERSTATE-395

Fair

Over: TRADING COVE BROOK

1 MILE NORTH OF ROUTE 2A, CT

Built 1958 Load: 99.9 t ADT: 54,600

ROUTE 2

Fair

Over: SALMON BROOK

150 (W)JCT RT 17&RT 94, CT

Built 1950 Load: 99.9 t ADT: 65,900

ROUTE 4

Fair

Over: GUINEA BROOK

.5 MI WEST OF JCT RTE 7, CT

Built 1934 Load: 99.9 t ADT: 2,400

US ROUTE 6

Fair

Over: FIVE MILE RIVER

Junction with Rte. 12, CT

Built 1959 Load: 99.9 t ADT: 18,300

INTERSTATE 84

Fair

Over: BEAVER BROOK

0.5 MILE WEST OF ROUTE 7, CT

Built 1962 Load: 99.9 t ADT: 120,000

I-84 TR 804

Fair

Over: BEAVER BROOK

EXIT 7 I-84 WB, CT

Built 1962 Load: 99.9 t ADT: 8,500

ROUTES 9 & 17

Fair

Over: SUMNER BROOK

JCT OF RTES 9 & 17, CT

Built 1953 Load: 99.9 t ADT: 41,400

ROUTE 10

Fair

Over: TEN MILE RIVER

300FT SO OF JCT ROUTE 322, CT

Built 1936 Load: 99.9 t ADT: 5,500

ROUTE 15

Fair

Over: MIANUS RIVER

0.6 MI E STAMFORD T/L, CT

Built 1937 Load: 99.9 t ADT: 65,120

ROUTE 15

Fair

Over: NORWALK RIVER

0.1 MI N OF US ROUTE 7, CT

Built 1938 Load: 99.9 t ADT: 54,320

ROUTE 15

Fair

Over: PUMPKIN BROOK

1.3 MILES W OF ROUTE 110, CT

Built 1941 Load: 99.9 t ADT: 80,000

ROUTE 15

Fair

Over: BALDWINS POND

OVER BALDWINS POND, CT

Built 1946 Load: 99.9 t ADT: 24,600

ROUTE 15

Fair

Over: FOLLY BROOK

0.26 MILE NORTH OF RTE 99, CT

Built 1941 Load: 99.9 t ADT: 47,500

ROUTE 17

Fair

Over: SUMNER BROOK

0.4 MI S OF ROUTE 9, CT

Built 1955 Load: 99.9 t ADT: 4,600

Showing 2,801-2,850 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.