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 254

Good

Over: NORTHFIELD BROOK

600N OF INT.OF 254 & 807, CT

Built 1970 Load: 97.2 t ADT: 5,800

ROUTE 254

Good

Over: NORTHFIELD BROOK

.20 MI NORTH OF SR807 JCT, CT

Built 1970 Load: 97.2 t ADT: 5,800

INTERSTATE-384 EB

Good

Over: BIKEWAY

300 FT WEST OF EXIT 1, CT

Built 1986 Load: 97.2 t ADT: 41,800

I-91 NB ON RAMP

Good

Over: ROUTE 159

EXIT 34 NB ON RAMP, CT

Built 1989 Load: 97.2 t ADT: 39,600

NORTH ROAD EXTENS.

Good

Over: COLES BROOK

0.1 MI E OF I-91, CT

Built 2020 Load: 97.2 t ADT: 586

TOBEY AVENUE

Good

Over: DECKERS BROOK

0.3 MILES WEST OF RTE 159, CT

Built 1955 Load: 97.2 t ADT: 262

AUTUMN RIDGE ROAD

Good

Over: RIGGS STREET BROOK

330 FT E OF RIGGS STREET, CT

Built 1994 Load: 97.2 t ADT: 39

EVANS HILL ROAD

Good

Over: WIMISINK BROOK

INT RTE55 GOLF COURSE ENT, CT

Built 2002 Load: 97.2 t ADT: 368

WEST WOODS RD NO.2

Good

Over: GUINEA BROOK

0.2 M E OF S ELLSWORTH RD, CT

Built 2016 Load: 97.2 t ADT: 106

MEADOWBROOK DRIVE

Good

Over: DRAINAGE

100 East of Chatham Dr., CT

Built 1995 Load: 97.2 t ADT: 2,121

ROUTE 106

Good

Over: FIVE MILE RIVER

475 FT S OF ROUTE 123, CT

Built 1989 Load: 98.8 t ADT: 6,600

INTERSTATE-95

Good

Over: FARM RIVER

0.3 MI N OF ROUTE 100, CT

Built 1958 Load: 99.9 t ADT: 103,000

INTERSTATE-95

Good

Over: BRANFORD RIVER

0.6 MI S OF US ROUTE 1, CT

Built 1958 Load: 99.9 t ADT: 70,500

INTERSTATE-395

Good

Over: MILL BROOK

4 MILE NORTH OF ROUTE 201, CT

Built 1958 Load: 99.9 t ADT: 30,000

SR 695

Good

Over: SNAKE MEADOW BROOK

1.6MI E OF INTERSTATE-395, CT

Built 1958 Load: 99.9 t ADT: 4,500

ROUTE 3

Good

Over: KEENEY COVE

1.4 MI N OF I-91, CT

Built 1959 Load: 99.9 t ADT: 58,000

ROUTE 15

Good

Over: WILMOT BROOK

1.0 MI S OF ROUTE 10, CT

Built 1949 Load: 99.9 t ADT: 77,800

ROUTE 83

Good

Over: THRESHER BROOK

0.2 MILE NORTH OF SR 528, CT

Built 1957 Load: 99.9 t ADT: 4,100

INTERSTATE-91

Good

Over: MILL BROOK

0.5 MI NORTH OF ROUTE 305, CT

Built 1954 Load: 99.9 t ADT: 132,500

ROUTE 354

Good

Over: DEEP RIVER BROOK

3.5 MI W OF ROUTE 82, CT

Built 1961 Load: 99.9 t ADT: 2,100

INTERSTATE-95

Good

Over: ASH CREEK

1.7 MI SOUTH OF ROUTE 8, CT

Built 2003 Load: 99.9 t ADT: 115,900

ROUTE 2 WESTBOUND

Good

Over: LYMANS BROOK

.3 MI WEST OF SO MAIN ST, CT

Built 1964 Load: 99.9 t ADT: 16,600

I-95 NB RAMP 277

Good

Over: STONY BROOK

I-95 NB EXIT NO. 91, CT

Built 1964 Load: 99.9 t ADT: 4,900

INTERSTATE-95 NB

Good

Over: SHUNOCK RIVER

0.3 MI S OF ROUTE 49, CT

Built 1964 Load: 99.9 t ADT: 13,600

INTERSTATE-95 SB

Good

Over: SHUNOCK RIVER

0.3 MI S OF ROUTE 49, CT

Built 1970 Load: 99.9 t ADT: 13,200

ROUTE 2

Good

Over: DARK HOLLOW BROOK

1.3 MI W OF MARLBORO TL, CT

Built 1964 Load: 99.9 t ADT: 47,400

INTERSTATE-691

Good

Over: SODOM BROOK

0.4 MI E OF ROUTE 71, CT

Built 1971 Load: 99.9 t ADT: 61,100

SR 632

Good

Over: SAWMILL BROOK

0.1 MILE WEST OF RTE. 195, CT

Built 1973 Load: 99.9 t ADT: 5,000

US 6 & RAMP SR 633

Good

Over: SAWMILL BROOK

0.1 MI WEST OF ROUTE 195, CT

Built 1973 Load: 99.9 t ADT: 17,000

ROUTE 104

Good

Over: E BRANCH OF MIANUS RIVER

3.3 MI N OF ROUTE 15, CT

Built 2019 Load: 99.9 t ADT: 6,900

INTERSTATE-395

Good

Over: LATHROP BROOK

.1 MI S OF LATHROP RD, CT

Built 1958 Load: 99.9 t ADT: 30,000

INTERSTATE-91

Good

Over: FALLS BROOK

500-FT SO. OF SMITH ST BR, CT

Built 1965 Load: 99.9 t ADT: 108,700

I384 RAMP & KEENEY

Good

Over: HOP BROOK

I-384 WB EXIT 2 OFF RAMP, CT

Built 1968 Load: 99.9 t ADT: 10,500

ROUTE 83 & RAMP

Good

Over: HOP BROOK

300 FT NORTH OF I-384, CT

Built 1970 Load: 99.9 t ADT: 11,600

HARPERS FERRY ROAD

Good

Over: BEAVER POND BROOK

NORTH OF I-84 OVERPASS, CT

Built 1952 Load: 99.9 t ADT: 12,900

SR 486 (AIRPORT RD

Good

Over: EIGHT MILE BROOK

100 EAST OF JCT RTE 188, CT

Built 1975 Load: 99.9 t ADT: 3,000

SOUND BEACH AVENUE

Good

Over: CIDER MILL BROOK

0.4 MILE SOUTH OF I-95, CT

Built 2023 Load: 99.9 t ADT: 15,420

GLENWOOD ROAD

Good

Over: INDIAN RIVER

1000 FT E OF ROUTE 81, CT

Built 1958 Load: 99.9 t ADT: 2,966

GRAYS BRIDGE ROAD

Good

Over: HOUSATONIC RR

2 MI WEST OF 133 & 25 INT, CT

Built 1979 Load: 99.9 t ADT: 9,095

VALLEY ROAD

Good

Over: WHETSTONE BROOK

NEAR JCT CAT HOLLOW ROAD, CT

Built 2001 Load: 99.9 t ADT: 1,402

OLD JEWETT CITY RD

Good

Over: BROAD BROOK

50 EAST OF KRUG ROAD, CT

Built 1955 Load: 99.9 t ADT: 566

VALLEY FORGE ROAD

Good

Over: SAUGATUCK RIVER

2 MILES EAST OF ROUTE 53, CT

Built 2011 Load: 99.9 t ADT: 610

E LITCHFIELD RD #2

Good

Over: SPRUCE BROOK

EAST LITCHFIELD FIREHOUSE, CT

Built 1956 Load: 99.9 t ADT: 244

SAW MILL ROAD

Good

Over: MARSHEPAUG RIVER

RIGHT ON MINOR RD GO 3 MI, CT

Built 1955 Load: 99.9 t ADT: 184

ROUTE 254

Good

Over: NORTHFIELD BROOK

05 NORTH OF MAIN STREET, CT

Built 1964 Load: 99.9 t ADT: 4,700

ROUTE 154

Good

Over: PONSET BROOK

200 SOUTH OF ROUTE 81, CT

Built 1987 Load: 99.9 t ADT: 5,400

SR 660

Good

Over: LITTLE RIVER

.3 MI NORTH OF ROUTE 97, CT

Built 1990 Load: 99.9 t ADT: 2,600

ROUTE 169

Good

Over: TATNIC BROOK

3 MI NORTH OF ROUTE 14, CT

Built 1990 Load: 99.9 t ADT: 2,200

NAUBUC AVENUE

Good

Over: SALMON BROOK

0.5 MI NORTH OF MAIN ST., CT

Built 1970 Load: 99.9 t ADT: 2,000

CARTER ROAD

Good

Over: KENT FALLS BROOK

1 MILE EAST OF ROUTE 7, CT

Built 2017 Load: 99.9 t ADT: 125

Showing 4,101-4,150 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.