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 8

Fair

Over: HOUSATONIC RIVER RT 110

ROUTE 8 EXIT 14, CT

Built 1951 Load: 32.7 t ADT: 83,900

BLUFF STREET

Fair

Over: ROUTE 8

1.3 MI N OF ROUTE 34, CT

Built 1959 Load: 32.7 t ADT: 487

SR 847

Fair

Over: MAD RIVER

200 FT N OF WASHINGTON ST, CT

Built 1935 Load: 32.7 t ADT: 7,300

ROUTE 14

Fair

Over: LITTLE RIVER

.8 MI EAST OF RTE 97, CT

Built 1928 Load: 32.7 t ADT: 3,500

ROUTE 15

Fair

Over: BYRAM RIVER

1.6 MI N OF N.Y. STATE, CT

Built 1997 Load: 32.7 t ADT: 57,020

MERWINS LANE

Fair

Over: ROUTE 15

3 MILES EAST OF EXIT 42, CT

Built 1940 Load: 32.7 t ADT: 1,040

ROUTE 15

Fair

Over: ROUTE 58

AT EXITS 44 & 45, CT

Built 1938 Load: 32.7 t ADT: 59,220

ROUTE 15

Fair

Over: WESTFIELD ROAD

2 MI SOUTH OF BERLIN TL, CT

Built 1946 Load: 32.7 t ADT: 24,600

RIDGE ROAD

Fair

Over: ROUTE 15 & US ROUTE 5

0.4 MILE SOUTH OF RTE 314, CT

Built 1942 Load: 32.7 t ADT: 4,700

ROUTE 75

Fair

Over: ROUTE 20

ROUTE 75 OVER ROUTE 20, CT

Built 1961 Load: 32.7 t ADT: 15,300

ROUTE 22

Fair

Over: MUNGER BROOK

0.3 MI E OF ROUTE 80, CT

Built 1928 Load: 32.7 t ADT: 6,400

ROUTE 25

Fair

Over: STILL RIVER

.1 MI EAST OF US RTE 202, CT

Built 1920 Load: 32.7 t ADT: 8,700

U.S. ROUTE 202

Fair

Over: EAST ASPETUCK RIVER

0.2 MILE SOUTH ROUTE 45, CT

Built 1931 Load: 32.7 t ADT: 5,400

U.S. ROUTE 202

Fair

Over: EAST ASPETUCK RIVER

50 FEET WEST OF ROUTE 45, CT

Built 1931 Load: 32.7 t ADT: 5,600

ROUTE 34

Fair

Over: FOUR MILE BROOK

100 FT W OF ROUTE 188, CT

Built 1930 Load: 32.7 t ADT: 11,100

ROUTE 37

Fair

Over: BOGGS POND BROOK

.5 MI N. OF INT. OF 39&53, CT

Built 1911 Load: 32.7 t ADT: 13,740

US RTE 44 MAIN ST

Fair

Over: AMTRAK RAILROAD

1.23 MI E OF RTE 187 INT, CT

Built 1871 Load: 32.7 t ADT: 25,300

US ROUTE 44

Fair

Over: FIVE MILE RIVER

2 MI EAST OF ROUTE 21, CT

Built 1931 Load: 32.7 t ADT: 4,700

ROUTE 53

Fair

Over: SAUGATUCK RESERVOIR BRK

SAUGATUCK RSVR, CT

Built 1939 Load: 32.7 t ADT: 2,200

ROUTES 53 & 107

Fair

Over: SAUGATUCK RIVER

180-FT SOUTH RTE 107 INT, CT

Built 1925 Load: 32.7 t ADT: 6,200

ROUTE 67

Fair

Over: BLADENS RIVER

50 YD N OF WASHINGTON AVE, CT

Built 1936 Load: 32.7 t ADT: 18,300

SR 846

Fair

Over: NAUGATUCK RIVER

0.1 MILE NORTH OF SR 847, CT

Built 1922 Load: 32.7 t ADT: 20,300

ROUTE 80

Fair

Over: BRANFORD RIVER

0.1 MI E OF ROUTE 139, CT

Built 1930 Load: 32.7 t ADT: 16,300

ROUTE 83

Fair

Over: ROARING BROOK

.40 MI N OF WB EXIT RTE 2, CT

Built 1940 Load: 32.7 t ADT: 5,500

ROUTE 162

Fair

Over: WEPAWAUG RIVER

1.3 MI E OF US ROUTE 1, CT

Built 1889 Load: 32.7 t ADT: 14,300

SR 745 (FIRST AVE)

Fair

Over: METRO NORTH RAILROAD

0.2 MI E OF I-95, CT

Built 1900 Load: 32.7 t ADT: 9,300

ROUTE 163

Fair

Over: OXOBOXO BROOK

0.2 MI N OF ROUTE 32, CT

Built 2001 Load: 32.7 t ADT: 4,100

ROUTE 188

Fair

Over: HOP BROOK

1.8 MI N OF ROUTE 64, CT

Built 1904 Load: 32.7 t ADT: 2,600

ROUTE 189

Fair

Over: WASH BROOK

0.2 MILE NORTH OF RTE 218, CT

Built 1913 Load: 32.7 t ADT: 17,800

ROUTE 189

Fair

Over: CROOKED BROOK

0.9 MILE SOUTH OF MASS SL, CT

Built 1935 Load: 32.7 t ADT: 1,400

ROUTE 190

Fair

Over: ROARING BROOK

0.8 MILE WEST OF UNION TL, CT

Built 1925 Load: 32.7 t ADT: 2,100

ROUTE 191

Fair

Over: BROAD BROOK

0.6 MI SOUTH OF ROUTE 140, CT

Built 1927 Load: 32.7 t ADT: 6,900

ROUTE 272

Fair

Over: NICKEL MINE BROOK

0.1 MILE NORTH OF ROUTE 4, CT

Built 1921 Load: 32.7 t ADT: 2,500

ROUTE 318

Fair

Over: BEAVER BROOK

0.2 MILE EAST OF RTE. 181, CT

Built 1937 Load: 32.7 t ADT: 4,800

ROUTE 318

Fair

Over: SAVILLE DAM SPILLWAY

0.6 MILE WEST OF RTE. 219, CT

Built 1940 Load: 32.7 t ADT: 5,300

SSR 454

Fair

Over: INDIAN HOLE BROOK

0.5 MILE N OF RT 110, CT

Built 1910 Load: 32.7 t ADT: 700

SSR 434

Fair

Over: BROOK

6.7 MI N OF ROUTE 82, CT

Built 1937 Load: 32.7 t ADT: 500

SSR 434

Fair

Over: BROOK

3.0 MI W OF ROUTE 82, CT

Built 1937 Load: 32.7 t ADT: 500

SSR 434

Fair

Over: MUDDY BROOK

2.8 MI W OF ROUTE 82, CT

Built 1937 Load: 32.7 t ADT: 700

MAIN STREET NO. 2

Fair

Over: SR 598 WHITEHEAD HIGHWAY

0.08 MI W OF PROSPECT ST, CT

Built 1832 Load: 32.7 t ADT: 12,900

ROUTE 100(MAIN ST)

Fair

Over: FARM RIVER

0.1 MI WEST OF US ROUTE 1, CT

Built 1900 Load: 32.7 t ADT: 5,500

NORTH MAIN STREET

Fair

Over: POLAND RIVER

100 FT WEST OF RTE 72, CT

Built 2017 Load: 32.7 t ADT: 2,809

ROUTE 66

Fair

Over: ROUTE 2

2.29 MI WEST HEBRON TL, CT

Built 1964 Load: 32.7 t ADT: 11,000

SR 845 (CHASE PARK

Fair

Over: INTERSTATE 84 & RAMP 053

CHASE PRKWY AT I-84 EX 18, CT

Built 1965 Load: 32.7 t ADT: 14,000

ROUTE 8 NORTHBOUND

Fair

Over: BOGUE ROAD

1 MILE NORTH OF EXIT 42, CT

Built 1966 Load: 32.7 t ADT: 12,250

INTERSTATE-95 NB

Fair

Over: BUDDINGTON ROAD

1.4 MI N OF ROUTE 12, CT

Built 1964 Load: 32.7 t ADT: 29,300

I-91 TR 811

Fair

Over: ROUTE 15 SOUTHBOUND

.12M S OF JCT I-91SB, CT

Built 1964 Load: 32.7 t ADT: 21,900

ROUTE 32

Fair

Over: WILLIMANTIC RIVER

600 FT SOUTH OF ROUTE 66, CT

Built 1868 Load: 32.7 t ADT: 14,300

ROUTE 4

Fair

Over: BALDWIN BROOK

AT JCT OF JEWELL STREET, CT

Built 1996 Load: 32.7 t ADT: 2,900

US ROUTE 1

Fair

Over: STRICKLAND BROOK

COSCOB SECTION OF GNWICH, CT

Built 1911 Load: 32.7 t ADT: 16,400

Showing 651-700 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.