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

SWORD AVENUE

Fair

Over: INTERSTATE-91

.25 MI WEST OF US 5, CT

Built 1959 Load: 29.2 t ADT: 443

INTERSTATE-91 SB

Fair

Over: ROUTE 99

AT EXIT 24, CT

Built 1964 Load: 29.2 t ADT: 71,700

ROUTE 157

Fair

Over: ASMUN BROOK

0.1 MI N OF ROUTE 68, CT

Built 1920 Load: 29.2 t ADT: 4,100

INTERSTATE-91 NB

Fair

Over: SMITH STREET

1.49 MI SOUTH OF RTE 372, CT

Built 1965 Load: 29.2 t ADT: 55,300

ROUTE 8 SOUTHBOUND

Fair

Over: PORTER STREET

1 MI SOUTH OF I-84 INTER., CT

Built 1965 Load: 29.2 t ADT: 25,600

SR 531 (SOUTH RD)

Fair

Over: I-84 & SR 508

EAST OF I-84 EXIT 39, CT

Built 1969 Load: 29.2 t ADT: 10,000

FREDERICK STREET

Fair

Over: COPPER MINE BROOK

50 FROM JCT CURTISS AVE, CT

Built 2015 Load: 29.2 t ADT: 2,700

FITZGERALD ROAD

Fair

Over: BLACKWELL BROOK

.5 MILES NORTH OF ROUTE 6, CT

Built 1986 Load: 29.2 t ADT: 458

INTERSTATE-91 NB

Fair

Over: SR 510 (MAIN STREET)

0.4 MI N WINDSOR LOCKS TL, CT

Built 1959 Load: 29.2 t ADT: 54,800

ROUTE 140

Fair

Over: CONNECTICUT RIVER

0.1 MI E OF ROUTE 159, CT

Built 1992 Load: 29.2 t ADT: 14,400

ROUTE 159

Fair

Over: DECKERS BROOK

0.1 MILE NORTH OF RTE 291, CT

Built 1993 Load: 29.2 t ADT: 12,700

U.S. ROUTE 6

Fair

Over: SCOTT SWAMP BROOK

0.1 MI.EAST OF ROUTE 177, CT

Built 1992 Load: 29.2 t ADT: 14,400

ROUTE 10

Fair

Over: QUINNIPIAC RIVER

0.5 MI N OF ROUTE 322, CT

Built 1994 Load: 29.2 t ADT: 9,800

ROUTE 159

Fair

Over: STONY BROOK

1 MI NO OF WINDSOR LKS TL, CT

Built 1929 Load: 29.3 t ADT: 6,600

ROUTE 82

Fair

Over: RUTH HILL RD&ROARING BK

1 MI W OF ROUTE 154, CT

Built 1971 Load: 29.4 t ADT: 7,600

INTERSTATE 95 SOUT

Fair

Over: THAMES RV LOC RDS & RR

O/THAMES RV LOC ROAD & RR, CT

Built 1973 Load: 29.4 t ADT: 43,700

INTERSTATE-95

Fair

Over: ELM STREET

I-95 EXIT NOS. 7 & 8, CT

Built 1958 Load: 29.5 t ADT: 106,900

INTERSTATE-395

Fair

Over: RAYMOND HILL RD & BROOK

1.3 MI NORTH OF ROUTE 163, CT

Built 1958 Load: 29.5 t ADT: 49,300

ROUTE 4

Fair

Over: W. BRANCH LEADMINE BROOK

1.5 MILES WEST OF RTE 118, CT

Built 1959 Load: 29.5 t ADT: 8,500

ROUTE 9 NORTHBOUND

Fair

Over: WEBSTER SQUARE ROAD

0.1 MILE NORTH OF EXIT 22, CT

Built 1962 Load: 29.5 t ADT: 37,900

ICHABOD ROAD

Fair

Over: INTERSTATE 84

BTWN I-84 EXITS 13 & 14, CT

Built 1963 Load: 29.5 t ADT: 645

CHRISTIAN ROAD

Fair

Over: INTERSTATE 84

1.4 MI EAST OF EXIT 16, CT

Built 1964 Load: 29.5 t ADT: 2,000

ROUTE 322

Fair

Over: MAD RIVER

105 FT E. OF ROUTE 69, CT

Built 1997 Load: 29.5 t ADT: 6,600

ROUTE 8 SOUTHBOUND

Fair

Over: FIFTH STREET

0.9 MILES SOUTH OF I-84, CT

Built 1965 Load: 29.5 t ADT: 25,600

ROUTE 9 SOUTHBOUND

Fair

Over: HUBBARD ROAD

1.0 MI S OF ROUTE 80, CT

Built 1966 Load: 29.5 t ADT: 15,600

ROUTE 9 SOUTHBOUND

Fair

Over: PRIVATE PROPERTY

.1 MI S OF NEW BRITAIN TL, CT

Built 1969 Load: 29.5 t ADT: 36,650

US ROUTE 1 ROUTE

Fair

Over: TURNEYS CREEK

JCT RTE 130 & OLD POST RD, CT

Built 1975 Load: 29.5 t ADT: 9,700

FLOOD BRIDGE ROAD

Fair

Over: POMPERAUG RIVER

1/4 MI WEST OF SO MAIN ST, CT

Built 1979 Load: 29.5 t ADT: 432

ANDREW AVENUE

Fair

Over: LONG MEADOW POND BROOK

200 FT SO JCT RUBBER AVE, CT

Built 1931 Load: 29.5 t ADT: 1,000

US ROUTE 1

Fair

Over: POQUONOCK RIVER

0.5 MI S OF US ROUTE 1, CT

Built 1994 Load: 29.5 t ADT: 12,900

ROUND HILL ROAD

Fair

Over: ROUTE 15

ROUTE 15 EXIT NO. 28, CT

Built 1935 Load: 29.7 t ADT: 4,400

RIVER ROAD

Fair

Over: GUINEA BROOK

0.4 MI S. OF ROUTE 4, CT

Built 1986 Load: 29.7 t ADT: 400

INTERSTATE-395

Fair

Over: OXOBOXO BRK & NEC ABAND.

325 FT S OF ROUTE 163, CT

Built 1958 Load: 29.8 t ADT: 49,500

US ROUTE 7

Fair

Over: NORWALK RIVER

0.6 M SOUTH OF RTE. 35, CT

Built 1958 Load: 29.8 t ADT: 14,800

CURRITUCK ROAD

Fair

Over: INTERSTATE 84

1.7 MI E OF ROUTE 25, CT

Built 1962 Load: 29.8 t ADT: 3,800

US ROUTE 1

Fair

Over: EAST RIVER

0.5 MI E OF ROUTE 146, CT

Built 1971 Load: 29.8 t ADT: 12,500

WEST ROAD

Fair

Over: ROUTE 11 NORTHBOUND

2.0 MI S OF ROUTE 2, CT

Built 1972 Load: 29.8 t ADT: 671

HUNTINGTON ROAD

Fair

Over: ROUTE 8

1.3 MI N OF ROUTE 15, CT

Built 1975 Load: 29.8 t ADT: 8,600

ROUTE 9 NORTHBOUND

Fair

Over: ROUTE 81 & PONSET BROOK

0.5 MI S OF NB EXIT 9, CT

Built 1966 Load: 29.8 t ADT: 14,700

KELSEYTWN BRDGE RD

Fair

Over: MENUNKETESUCK RIVER

250 FT W OF RESERVOIR RD, CT

Built 1938 Load: 29.8 t ADT: 584

LOWER ROAD

Fair

Over: BLACKBERRY RIVER

.75 MI W OF FURNACE HILL, CT

Built 1938 Load: 29.8 t ADT: 628

LILY POND ROAD

Fair

Over: PROV & WORC RAILROAD

0.1 MI EAST OF ROUTE 12, CT

Built 1990 Load: 29.8 t ADT: 260

SR536 - CROOKED ST

Fair

Over: INTERSTATE-84 & ROUTE 72

0.3 MI W OF ROUTE 372, CT

Built 1968 Load: 29.9 t ADT: 10,400

ROUTE 9 SOUTHBOUND

Fair

Over: ROUTE 80 (ELM STREET)

ROUTE 9 EXIT NO. 5, CT

Built 1968 Load: 30.0 t ADT: 16,600

ROUTE 15

Fair

Over: RIVERSVILLE RD E BR BYRA

1.8 MI EAST OF EXIT 27, CT

Built 1935 Load: 30.0 t ADT: 53,800

STRAWBERRY HILL AV

Fair

Over: INTERSTATE 95

1.5 MI S OF ROUTE 33, CT

Built 1958 Load: 30.1 t ADT: 8,400

INTERSTATE-95

Fair

Over: SOUTH AVENUE NO. 1

0.3 MI S OF ROUTE 130, CT

Built 1959 Load: 30.1 t ADT: 92,800

INTERSTATE-95

Fair

Over: GRETA STREET

0.2 MI N OF ROUTE 162, CT

Built 1957 Load: 30.1 t ADT: 114,100

INTERSTATE 95

Fair

Over: LAKE SALTONSTALL

0.5 MI N OF ROUTE 100, CT

Built 1998 Load: 30.1 t ADT: 84,500

ROUTE 15

Fair

Over: CONVERSE POND BROOK

2.8 MI N OF NY STATE LINE, CT

Built 1935 Load: 30.1 t ADT: 53,800

Showing 401-450 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.