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

OLIVER ROAD

Good

Over: PEASE BROOK

2 150 West of Route 87, CT

Built 2008 Load: 32.7 t ADT: 396

NINTH DISTRICT ROA

Good

Over: GULF STREAM

0.2 MI SOUTH OF ROUTE 190, CT

Built 2014 Load: 32.7 t ADT: 3,800

FLAT ROCKS ROAD

Good

Over: W BRANCH SHEPAUG RIVER

+/- 2 MI west of Rte. 45, CT

Built 2017 Load: 32.7 t ADT: 53

SOUTH CURTIS STREE

Good

Over: MEETINGHOUSE BROOK

660 FT S OF CURTIS STREET, CT

Built 1989 Load: 32.7 t ADT: 2,700

WILD HORSE COURT

Good

Over: SAMMIS BROOK

1.7 mi. west of Route 111, CT

Built 1990 Load: 32.7 t ADT: 673

COLD SPRING ROAD

Good

Over: HALEYS BROOK

100 South of Rte. 184, CT

Built 2002 Load: 32.7 t ADT: 104

PLEASANT ROAD

Good

Over: BOWEYNS BROOK

0.5 miles South of Sr 510, CT

Built 2007 Load: 32.7 t ADT: 364

AUSTIN BROOK DRIVE

Good

Over: AUSTIN BROOK

850 west of Sheldon St., CT

Built 2000 Load: 32.7 t ADT: 104

THORNE ROAD

Good

Over: ROCKLEDGE BROOK

200 East of Davenport, CT

Built 1965 Load: 32.7 t ADT: 208

GODFREY ROAD WEST

Good

Over: W BRANCH SAUGATUCK RIVER

AT INT. WITH PENT ROAD, CT

Built 2015 Load: 32.7 t ADT: 275

LONG HILL ROAD

Good

Over: SPINNING MILL BROOK

.13 mi. north of Route 1, CT

Built 2018 Load: 32.7 t ADT: 3,700

MAIN STREET

Good

Over: SHUNOCK RIVER

Main St. and Wyassup Rd., CT

Built 2012 Load: 32.7 t ADT: 1,133

MAIN STREET

Good

Over: POCOTOPAUG CREEK

0.5 MI N OF ROUTE 16, CT

Built 2009 Load: 32.7 t ADT: 3,646

MONARCH DRIVE

Good

Over: BROOK

0.3 MI S. OF JUDE LANE, CT

Built 2010 Load: 32.7 t ADT: 260

LIBERTY STREET

Good

Over: GREAT BROOK

0.2 MI E OF PLEASANT ST., CT

Built 2009 Load: 32.7 t ADT: 200

BARTLETT DRIVE

Good

Over: NECK RIVER

525 FT W OF HILL ROAD, CT

Built 2010 Load: 32.7 t ADT: 260

BEAVER BROOK ROAD

Good

Over: STREAM

.3 MI W OF BRIAR RIDGE RD, CT

Built 2000 Load: 32.7 t ADT: 105

ENTRANCE TO MALL L

Good

Over: UNNAMED STREAM

MASHANTUCKET PEQUOT RESER, CT

Built 2006 Load: 32.7 t ADT: 1,000

MALL LOADING DOCK

Good

Over: UNNAMED STREAM

MASHANTUCKET PEQUOT RESER, CT

Built 2014 Load: 32.7 t ADT: 150

PEQUOT TRAIL

Good

Over: UNNAMED STREAM

MASHANTUCKET PEQUOT RESER, CT

Built 1993 Load: 32.7 t ADT: 1,000

PEQUOT TRAIL

Good

Over: UNNAMED STREAM

MASHANTUCKET PEQUOT RESER, CT

Built 1993 Load: 32.7 t ADT: 1,000

TRADING COVE ROAD

Good

Over: UNNAMED CREEK

.25 miles from Mohegan Su, CT

Built 2001 Load: 32.7 t ADT: 50

INDIAN SUMMER SELF

Good

Over: GARDEN

INDIAN SUMMER SELF-PARK E, CT

Built 2002 Load: 32.7 t ADT: 750

US ROUTE 7

Good

Over: NORWALK RIVER

0.6 MI N OF ROUTE 33 JCT, CT

Built 2008 Load: 33.0 t ADT: 20,000

ROUTE 322

Good

Over: LINDSLEY BROOK

1.6 MI. EAST OF ROUTE 69, CT

Built 2013 Load: 33.0 t ADT: 4,800

SPRING STREET

Good

Over: QUINNIPIAC RIVER

0.6 MI W. OF ROUTE 10, CT

Built 2022 Load: 33.0 t ADT: 4,105

U.S. ROUTE 44

Good

Over: WEST NORFOLK BROOK

0.8 MI E OF NO. CANAAN TL, CT

Built 2008 Load: 33.3 t ADT: 4,600

ROUTE 154

Good

Over: CHESTER CREEK

320 FT S OF ROUTE 148, CT

Built 2010 Load: 33.4 t ADT: 4,400

ROUTE 150

Good

Over: MUDDY RIVER

1.4 MI S OF I-91, CT

Built 1938 Load: 33.4 t ADT: 4,300

ROUTE 217

Good

Over: MATTABESSET RIVER

JCT OF ROUTE 372, CT

Built 2004 Load: 33.4 t ADT: 14,900

ROUTE 148

Good

Over: GREAT BROOK

0.7 MI W OF ROUTE 154, CT

Built 2012 Load: 33.4 t ADT: 1,600

SKILTON ROAD

Good

Over: NONEWAUG RIVER

OFF GUERNSEYTOWN ROAD, CT

Built 1860 Load: 33.4 t ADT: 394

FLAT ROCK PLACE

Good

Over: WETLANDS

0.4 MI E OF ROUTRE 153, CT

Built 1996 Load: 33.4 t ADT: 3,380

LOWER RIVER RD #1

Good

Over: MILL BROOK

200 FT N OF RTE 128, CT

Built 2012 Load: 33.4 t ADT: 100

WATER STREET

Good

Over: MOOSUP RIVER

0.1 MI SOUTH OF ROUTE 14, CT

Built 1997 Load: 33.6 t ADT: 1,491

US ROUTE 1

Good

Over: BROOK

AT OLD POST ROAD, CT

Built 2016 Load: 33.7 t ADT: 3,700

ROUTE 66

Good

Over: NATCHAUG RIVER

.5 MI EAST JCT 195 & 14, CT

Built 2020 Load: 33.7 t ADT: 7,800

ROUTE 15

Good

Over: HOUSATONIC RIVER & MNRR

RTE 15 BETWEEN EX 53 & 54, CT

Built 2004 Load: 33.7 t ADT: 98,800

INTERSTATE-84

Good

Over: BEAVER POND BROOK

0.3 MI W OF SCOTT ROAD, CT

Built 1960 Load: 33.7 t ADT: 92,200

PALMER BRIDGE ST

Good

Over: NAUGATUCK RIVER

500 EAST OF ROUTE 800, CT

Built 1961 Load: 33.7 t ADT: 1,854

ROUTE 72

Good

Over: PEQUABUCK RIVER

0.1 MILE EAST OF RTE 229, CT

Built 2009 Load: 33.7 t ADT: 8,400

SIMPAUG TURNPIKE

Good

Over: METRO-NORTH RAILROAD

300-FT EAST O MARCHANT RD, CT

Built 2012 Load: 33.9 t ADT: 1,800

SR 695

Good

Over: QUANDUCK BROOK

4.7 MILES EAST OF I-395, CT

Built 1958 Load: 34.0 t ADT: 4,800

I-95 & PARKWAY N.

Good

Over: JORDAN BROOK

0.9 MI S OF ROUTE 85, CT

Built 1964 Load: 34.0 t ADT: 58,100

ROUTE 8 NORTHBOUND

Good

Over: ARMSTRONG ROAD

2.5 NORTH OF ROUTE 15, CT

Built 1975 Load: 34.0 t ADT: 31,800

WEST MAIN STREET

Good

Over: QUINNIPIAC RIVER

760 FT W OF ROUTE 10, CT

Built 1979 Load: 34.0 t ADT: 8,300

TUNNEL ROAD

Good

Over: KIRBY BROOK

SOUTH OF SPRINGHILL ROAD, CT

Built 1956 Load: 34.0 t ADT: 31

JONES HILL ROAD

Good

Over: EIGHT MILE RIVER

580 FT E OF SSR 434, CT

Built 2006 Load: 34.0 t ADT: 93

ROUTE 47

Good

Over: SPRAIN BROOK

2 MILES NO. OF ROUTE 132, CT

Built 1988 Load: 34.0 t ADT: 2,100

PLANK ROAD

Good

Over: MAD RIVER

100W OF HARPERS FERRY RD, CT

Built 2015 Load: 34.0 t ADT: 3,100

Showing 3,251-3,300 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.