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 1

Fair

Over: FORT HILL BROOK

0.4 MI EAST OF ROUTE 117, CT

Built 1963 Load: 32.7 t ADT: 10,200

ROUTE 67

Fair

Over: TOWN FARM BROOK

0.7 MI NO BRIDGEWATER TL, CT

Built 1946 Load: 32.7 t ADT: 5,600

ROUTE 175

Fair

Over: SANDY BROOK

0.3 MI W OF NEWINGTON TL, CT

Built 2004 Load: 32.7 t ADT: 8,600

SR 529

Fair

Over: PIPER BROOK RELOCATION

0.6 MI EAST OF ROUTE 173, CT

Built 1973 Load: 32.7 t ADT: 15,600

ROUTE 272

Fair

Over: HALL MEADOW BROOK

2.3 MILE NO. OF GOSHEN TL, CT

Built 1998 Load: 32.7 t ADT: 1,000

ROUTE 3

Fair

Over: P & W RAILROAD

0.2 MI N OF ROUTE 66, CT

Built 1974 Load: 32.7 t ADT: 13,500

INTERSTATE-91 NB

Fair

Over: MILL RV-STATE ST RMP 140

1.4 MI N OF I-95, CT

Built 1965 Load: 32.7 t ADT: 73,200

ROUTE 31

Fair

Over: MILL BROOK

1 MI WEST OF MANSFIELD TL, CT

Built 1870 Load: 32.7 t ADT: 4,900

JOHNSON ROAD

Fair

Over: ROUTE 2

0.4 MI E OF O PASS RT 66, CT

Built 1966 Load: 32.7 t ADT: 606

ROUTE 63

Fair

Over: BEACON HILL BROOK

0.9 MI NORTH OF ROUTE 42, CT

Built 1966 Load: 32.7 t ADT: 8,900

INTERSTATE-84 WB

Fair

Over: OLIVE STREET (ABANDONED)

AT EXIT 45, CT

Built 1967 Load: 32.7 t ADT: 68,900

SSR 485

Fair

Over: NICKEL MINE BROOK

300 FEET NORTH OF ROUTE 4, CT

Built 1957 Load: 32.7 t ADT: 500

ROUTE 53

Fair

Over: STILL RIVER

ROUTE 53 @ KENNEDY STREET, CT

Built 1964 Load: 32.7 t ADT: 15,200

INTERSTATE-395 SB

Fair

Over: TRACY ROAD

2 MI NORTH OF ROUTE 101, CT

Built 1968 Load: 32.7 t ADT: 14,500

ASYLUM AVENUE

Fair

Over: NORTH BRANCH PARK RIVER

300 EAST OF ELIZABETH ST, CT

Built 1959 Load: 32.7 t ADT: 11,600

NAUBUC AVENUE

Fair

Over: PORTER BROOK

100-FT NO. PUTNAM BLVD, CT

Built 1871 Load: 32.7 t ADT: 3,600

NOROTON AVENUE

Fair

Over: METRO-NORTH RAILROAD

330 FT North OF I-95, CT

Built 1900 Load: 32.7 t ADT: 9,300

WEST STREET

Fair

Over: STILL RIVER

0.8 MI WEST OF ROUTE 53, CT

Built 1925 Load: 32.7 t ADT: 17,500

WHITE STREET

Fair

Over: STILL RIVER

0.1 MILE EAST OF ROUTE 53, CT

Built 1964 Load: 32.7 t ADT: 16,400

JUDD ROAD

Fair

Over: POLAND RIVER

100 FEET EAST OF ROUTE 72, CT

Built 1955 Load: 32.7 t ADT: 663

SOUTH COLONY ST

Fair

Over: HARBOR BROOK

JCT(S) COLONY &PERKINS ST, CT

Built 1900 Load: 32.7 t ADT: 2,700

EAST MAIN STREET

Fair

Over: MAD RIVER

0.5 MILE EAST OF ROUTE 69, CT

Built 1943 Load: 32.7 t ADT: 10,100

PINE ORCHARD ROAD

Fair

Over: BRANFORD RIVER

0.1 MI E OF ROUTE 146, CT

Built 1960 Load: 32.7 t ADT: 7,100

ROUTE 25 SB

Fair

Over: FAIRCHILD MEMORIAL PARK

0.7 MI S OF ROUTE 15, CT

Built 1971 Load: 32.7 t ADT: 21,500

NORTH MAIN STREET

Fair

Over: HOCKANUM RIVER

0.6 MI WEST OF JCT RTE 83, CT

Built 2001 Load: 32.7 t ADT: 7,100

EDGEWOOD AVENUE

Fair

Over: WEST RIVER & PARK ROAD

0.5 MI WEST OF RTE 10, CT

Built 1910 Load: 32.7 t ADT: 3,100

NORTH STREET

Fair

Over: RIPPOWAM RIVER

0.2 MI W OF ROUTE 137, CT

Built 1900 Load: 32.7 t ADT: 7,750

CLIFTON ST

Fair

Over: AMTRAK RAILROAD

OVER AMTRAK, CT

Built 1912 Load: 32.7 t ADT: 1,930

GREENHAVEN ROAD

Fair

Over: AMTRAK RAILROAD

0.6 MI S OF US ROUTE 1, CT

Built 1926 Load: 32.7 t ADT: 1,200

TOWN FARM ROAD

Fair

Over: SCANTIC RIVER

1.5 MILES WEST OF RTE 191, CT

Built 1968 Load: 32.7 t ADT: 4,636

PALMER HILL ROAD

Fair

Over: MIANUS RIVER

JCT VALLEY ROAD, CT

Built 1907 Load: 32.7 t ADT: 6,580

PINK ROW ROAD

Fair

Over: OXOBOXO BROOK

0.3 MI S OF ROUTE 32, CT

Built 1960 Load: 32.7 t ADT: 1,500

WHITNEY AVENUE

Fair

Over: FARMINGTON CANAL GREENWA

100 NORTH OF CHURCH ST, CT

Built 1885 Load: 32.7 t ADT: 4,400

PROSPECT STREET

Fair

Over: FARMINGTON CANAL GREENWA

AT JCT WITH TRUMBULL ST, CT

Built 1929 Load: 32.7 t ADT: 4,600

ROSS HILL ROAD

Fair

Over: PROV & WORC RAILROAD

1 MILE NORTH OF ROUTE 138, CT

Built 1963 Load: 32.7 t ADT: 458

ETHAN ALLEN ROAD

Fair

Over: HRR & PRIVATE ROAD

ACCESS RD TO LANDFILL END, CT

Built 1975 Load: 32.7 t ADT: 600

JOHN STREET

Fair

Over: AMTRAK RAILROAD

OFF ROUTE 5, CT

Built 1964 Load: 32.7 t ADT: 2,505

BRIDGE STREET

Fair

Over: AMTRAK RAILROAD

200 N OF WEST END AVENUE, CT

Built 1917 Load: 32.7 t ADT: 284

N MAIN & RIVERSIDE

Fair

Over: PEQUABUCK RIVER

JCT N MAIN & RIVERSIDE AV, CT

Built 1972 Load: 32.7 t ADT: 8,800

CROSBY STREET

Fair

Over: PADANARAM BROOK

0 MI EAST OF ROUTE 53, CT

Built 1899 Load: 32.7 t ADT: 10,130

PERRY AVENUE

Fair

Over: SILVERMINE RIVER

300-FT E. SILVERMINE RD, CT

Built 1899 Load: 32.7 t ADT: 1,388

WINTERGREEN AVENUE

Fair

Over: TOWN FARM BROOK

.1 WEST OF WILMONT AVENUE, CT

Built 1890 Load: 32.7 t ADT: 2,800

MIDDLESEX ROAD

Fair

Over: STONY BROOK

1.5 MI E OF ROUTE 106, CT

Built 1950 Load: 32.7 t ADT: 6,870

SPRING STREET

Fair

Over: BIRCH MOUNTAIN BROOK

100(W) OF INT GLEN RD, CT

Built 1905 Load: 32.7 t ADT: 1,200

GLOVER AVE

Fair

Over: NORWALK RIVER

175 FT WEST OF SR 719, CT

Built 1912 Load: 32.7 t ADT: 2,140

PLEASANT VALLEY RD

Fair

Over: PODUNK RIVER

0.6 MILES EAST OF ROUTE 5, CT

Built 1929 Load: 32.7 t ADT: 5,458

ATWATER STREET

Fair

Over: QUINNIPIAC RIVER

575 FT W OF ROUTE 10, CT

Built 1961 Load: 32.7 t ADT: 1,055

WALL STREET

Fair

Over: NORWALK RIVER

0.4 MILE SOUTH OF ROUTE 1, CT

Built 1922 Load: 32.7 t ADT: 7,040

COE AVENUE

Fair

Over: HARBOR BROOK

AT JCT OF BRADLEY AVENUE, CT

Built 1955 Load: 32.7 t ADT: 3,000

OCEAN AVENUE #1

Fair

Over: COVE RIVER

2.2 MI EAST OF ROUTE 162, CT

Built 1935 Load: 32.7 t ADT: 7,100

Showing 701-750 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.