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 63

Good

Over: NAUGATUCK RV MNRR & ELM

0.1 MI N OF RTE 8 EXIT 26, CT

Built 2011 Load: 57.7 t ADT: 14,500

INTERSTATE-91 SB

Good

Over: SR 729

0.8 MI N OF ROUTE 40, CT

Built 1965 Load: 57.7 t ADT: 45,400

ROUTE 2

Good

Over: ROUTE 2 RAMPS

2.4 MI E OF ROUTE 164, CT

Built 2009 Load: 57.7 t ADT: 9,300

CAMPVILLE ROAD

Good

Over: NAUGATUCK RAILROAD CO.

.2 MI E OF ROUTE 8 EXIT41, CT

Built 1955 Load: 57.8 t ADT: 500

INTERSTATE-84 EB

Good

Over: ROUTE 31

INTERSTATE-84 EXIT 67, CT

Built 1978 Load: 57.8 t ADT: 36,450

BEACH ROAD

Good

Over: BRIDE BROOK

MAIN ACCESS ROAD TO BEACH, CT

Built 1987 Load: 57.8 t ADT: 3,323

ROUTE 97

Good

Over: BEAVER BROOK

.1 MI SOUTH ROUTE 207, CT

Built 1939 Load: 58.0 t ADT: 3,000

ROUTE 82

Good

Over: HUNGERFORD BROOK

1.0 MI W OF ROUTE 148, CT

Built 2017 Load: 58.0 t ADT: 2,300

INTERSTATE 91 NB

Good

Over: CHAPEL STREET

0.1 M N OF I-95, CT

Built 1965 Load: 58.0 t ADT: 72,800

INTERSTATE 91 SB

Good

Over: CHAPEL STREET

0.5 M N OF I-95, CT

Built 1965 Load: 58.0 t ADT: 63,400

INTERSTATE 84 EAST

Good

Over: CENTER STREET

.25 MI WEST OF ROCHAMBEAU, CT

Built 1978 Load: 58.0 t ADT: 36,950

MEMORIAL BLVD.

Good

Over: PEQUABUCK RIVER

AT EAST END OF BOULEVARD, CT

Built 1921 Load: 58.3 t ADT: 8,980

JOHNSONVILLE ROAD

Good

Over: MOODUS RIVER

0.4 MI NORTH OF ROUTE 149, CT

Built 2019 Load: 58.3 t ADT: 280

MILTON ROAD #2

Good

Over: MARSHEPAUG RIVER

JCT. SHEAR-SHOP ROAD, CT

Built 2020 Load: 58.3 t ADT: 318

NORTH ROAD

Good

Over: ROUTE 9 NB & RAMP

OVERPASS ROUTE 9 NB, CT

Built 1988 Load: 58.3 t ADT: 63

MEADOWBROOK DRIVE

Good

Over: TUCKER BROOK

300 ft East of Vernon St, CT

Built 1994 Load: 58.3 t ADT: 2,121

INTERSTATE 95

Good

Over: ROUTE 162

I-95 AT EXIT 42, CT

Built 2005 Load: 58.4 t ADT: 105,200

OLD NEWTOWN ROAD

Good

Over: STILL RIVER

0.2 MI W OF NEWTOWN RD, CT

Built 2000 Load: 58.4 t ADT: 7,580

INTERSTATE-95

Good

Over: PEMBROKE STREET

0.1 MI N OF ROUTE 127, CT

Built 1959 Load: 58.6 t ADT: 117,900

RECREATION PARK ST

Good

Over: LITTLE RIVER

1/8 MILE EAST OF SABIN ST, CT

Built 2020 Load: 58.6 t ADT: 772

ROUTE 154

Good

Over: DEEP RIVER

0.6 MI N OF ROUTE 80, CT

Built 1984 Load: 58.6 t ADT: 5,000

INTERSTATE-91 SB

Good

Over: WESTON STREET

0.3 MILE SOUTH OF RTE 159, CT

Built 1991 Load: 58.6 t ADT: 68,400

DEFCO PARK ROAD

Good

Over: AMTRAK RAILROAD

500 WEST OF ROUTE 5, CT

Built 1961 Load: 58.7 t ADT: 4,480

ROUTE 74

Good

Over: KNOWLTON BROOK

1.5 MILE WEST OF ROUTE 44, CT

Built 1939 Load: 58.7 t ADT: 4,600

ROUTE 219

Good

Over: NEPAUG RIVER

0.6 MILE NORTH OF RTE 202, CT

Built 1988 Load: 58.8 t ADT: 3,400

RUBBER AVENUE EXT.

Good

Over: LONG MEADOW POND BROOK

OVER LONG MEADOW POND BRK, CT

Built 1956 Load: 58.9 t ADT: 2,600

ROUTE 37

Good

Over: PADANARAM BROOK

0.3 MI NORTH OF I-84, CT

Built 1960 Load: 59.0 t ADT: 20,800

ROUTE 15

Good

Over: MILL RIVER

0.5 MI S OF ROUTE 58, CT

Built 2010 Load: 59.3 t ADT: 70,000

OLD NORWALK ROAD

Good

Over: FIVE MILE RIVER

100 EAST OF MAIN STREET, CT

Built 1956 Load: 59.3 t ADT: 3,825

RESERVOIR ROAD

Good

Over: MENUNKETESUCK RIVER

0.4 MI N. OF ROUTE 80, CT

Built 2009 Load: 59.3 t ADT: 306

DINGS ROAD

Good

Over: NEPAUG RIVER

100FT W OF CARPENTER ROAD, CT

Built 1956 Load: 59.3 t ADT: 270

WHITES WOODS RD #1

Good

Over: BANTAM RIVER

OVER BANTAM RIVER, CT

Built 2017 Load: 59.3 t ADT: 520

OLD KINGS HWY N #1

Good

Over: INTERSTATE-95

0.5 MI WEST NORWALK TL, CT

Built 1952 Load: 59.6 t ADT: 3,900

U.S. ROUTE 6

Good

Over: LITTLE RIVER

1 MILE EAST OF ROUTE 97, CT

Built 1949 Load: 59.6 t ADT: 6,400

ROUTE 183

Good

Over: SANDY BROOK

1.5 MILE SO OF NORFOLK TL, CT

Built 1958 Load: 59.6 t ADT: 550

PACKERVILLE ROAD

Good

Over: MILL BROOK

1.5 MI SOUTH OF ROUTE 14A, CT

Built 1850 Load: 59.6 t ADT: 994

SR 508

Good

Over: SR 549 (BIRDSEYE ROAD)

ADJ TO JUNC ROUTE 4+84, CT

Built 1972 Load: 59.8 t ADT: 36,700

INTERSTATE-95

Good

Over: LIBERTY STREET NO. 1

0.5 MI N OF ROUTE 81, CT

Built 1957 Load: 59.9 t ADT: 60,600

INTERSTATE 84 WB

Good

Over: SR 824 (WOODLAND RD.)

EXIT 2, CT

Built 1984 Load: 59.9 t ADT: 36,100

I-84 TR 834

Good

Over: ROUTE 322

INTERSTATE-84 WB EXIT 28, CT

Built 1987 Load: 59.9 t ADT: 9,600

VELVET STREET

Good

Over: MUDDY RIVER

0.5 Mi. West of Rte 17, CT

Built 1988 Load: 59.9 t ADT: 1,400

I-384 WB ON RAMP

Good

Over: HOP BROOK & BIKE PATH

EXIT 3 RAMP FROM SR 534, CT

Built 1969 Load: 60.2 t ADT: 4,800

EMMONS LANE

Good

Over: WHITING RIVER

SOUTH OF CANAAN VALLEY RD, CT

Built 2009 Load: 60.2 t ADT: 255

US ROUTE 7

Good

Over: HOUSATONIC RIVER

T.L. CANAAN & SALISBURY, CT

Built 1931 Load: 60.3 t ADT: 3,500

SHORE ROAD #1

Good

Over: HORSENECK BROOK

100 FT N OF I-95, CT

Built 1905 Load: 60.3 t ADT: 1,890

CROSS ROAD

Good

Over: STILL RIVER

700 EAST OF US ROUTE 7, CT

Built 1993 Load: 60.3 t ADT: 663

INTERSTATE-91 NB

Good

Over: STODDARD AVENUE

RTE5 TO BROADWY TO ELM ST, CT

Built 1965 Load: 60.5 t ADT: 95,200

SR 617

Good

Over: SHUNOCK RIVER

0.4 MI E OF ROUTE 2, CT

Built 1970 Load: 60.6 t ADT: 1,500

TUFTS DRIVE

Good

Over: TUCKER BROOK

0.5 MI S OF MEADOWBROOK, CT

Built 2005 Load: 60.6 t ADT: 530

OLIVE STREET

Good

Over: AMTRAK RAILROAD

100 EAST OF STATE STREET, CT

Built 1998 Load: 60.7 t ADT: 4,800

Showing 3,901-3,950 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.