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

COVELL ROAD

Good

Over: MASHAMOQUET BROOK

0.4 MI SOUTH OF ROUTE 97, CT

Built 1900 Load: 37.8 t ADT: 132

ROUTE 71

Good

Over: SODOM BROOK

0.8 MILE SOUTH OF I-691, CT

Built 2019 Load: 37.9 t ADT: 141,900

US ROUTE 6 EB

Good

Over: ROUTE 32

.5 MI EAST OF COVENTRY TL, CT

Built 1972 Load: 37.9 t ADT: 7,850

CURTIS STREET

Good

Over: ROUTE 72

1.2 MI N OF ROUTE 9, CT

Built 1973 Load: 37.9 t ADT: 4,527

LONG MOUNTAIN RD#1

Good

Over: WEST ASPETUCK RIVER

250 WEST OF MERRYALL RD, CT

Built 2002 Load: 37.9 t ADT: 1,125

FLAT ROCK PLACE

Good

Over: WETLANDS

0.6 MI E OF ROUTE 153, CT

Built 1996 Load: 37.9 t ADT: 3,511

ROUTE 70

Good

Over: BROAD BROOK

320 FT W OF MERIDEN T.L., CT

Built 2013 Load: 38.0 t ADT: 1,600

CEDAR HILL ROAD

Good

Over: MORRISSEY BROOK

0.3 M WEST OF ROUTE 7, CT

Built 2003 Load: 38.0 t ADT: 596

SR 724 WESTBOUND

Good

Over: BREWERY STREET

0.3 MI E. OF US ROUTE 1, CT

Built 2011 Load: 38.1 t ADT: 37,750

MAPLE STREET

Good

Over: FARM RIVER

0.1 MI S OF ROUTE 100, CT

Built 2011 Load: 38.1 t ADT: 1,444

ROUTE 74

Good

Over: WILLIMANTIC RIVER

AT TOLLAND TOWN LINE, CT

Built 2017 Load: 38.2 t ADT: 8,400

MAIN STREET

Good

Over: PATTACONK BROOK

55 FT S OF ROUTE 148, CT

Built 2016 Load: 38.2 t ADT: 1,500

HALES ROAD

Good

Over: METRO-NORTH RAILROAD

0.5 MI W HILLS POINT RD, CT

Built 1910 Load: 38.2 t ADT: 1,080

BOLTON ROAD

Good

Over: TANKERHOOSEN RIVER

25 FT S OF BAMFORTH ROAD, CT

Built 2007 Load: 38.2 t ADT: 1,500

ROUTE 175

Good

Over: AMTRAK RAILROAD

.49MI E NW BRTN-NWNGTN TL, CT

Built 1980 Load: 38.2 t ADT: 29,700

POTASH HILL ROAD

Good

Over: LITTLE RIVER

0.5 MI EAST OF MAIN ST, CT

Built 1938 Load: 38.2 t ADT: 658

SANDY BROOK ROAD

Good

Over: SANDY BROOK

3.9 MILES E OF ROUTE 183, CT

Built 2013 Load: 38.2 t ADT: 662

WHEELER ROAD

Good

Over: SPRUCE BROOK

.1 MILE NORTH ROUTE 118, CT

Built 1956 Load: 38.2 t ADT: 186

I-691 TR 804

Good

Over: KNOTTER DRIVE

I-691 WB EXIT NO. 2, CT

Built 1986 Load: 38.2 t ADT: 9,700

ROUTE 45

Good

Over: SUCKER BROOK

1 MILE SOUTH OF ROUTE 341, CT

Built 1988 Load: 38.2 t ADT: 1,500

WESTSIDE ROAD

Good

Over: BLACKBERRY RIVER

500 FT WEST OF ROUTE 44, CT

Built 1940 Load: 38.3 t ADT: 252

US ROUTE 1

Good

Over: STONEY BROOK

0.7 MI SOUTH OF I-95 UP, CT

Built 1986 Load: 38.5 t ADT: 11,800

ROUTE 22

Good

Over: MILL RIVER

.2 MI E OF ROUTE 10, CT

Built 2002 Load: 38.6 t ADT: 4,200

INTERSTATE-84 EB

Good

Over: BERKSHIRE ROAD

0.7 MI E OF FARMINGTON TL, CT

Built 2022 Load: 38.6 t ADT: 66,800

US ROUTE 1

Good

Over: STONY BROOK

0.2 MI S OF ROUTE 1A, CT

Built 2013 Load: 38.6 t ADT: 6,500

MAGNOLIA HILL ROAD

Good

Over: EAST SPRING BROOK

0.5 MILES EAST OF RTE 132, CT

Built 1955 Load: 38.6 t ADT: 255

I-84 WB EXIT 25A

Good

Over: BEAVER POND BROOK

I-84 WB EXIT 25A, CT

Built 2006 Load: 38.6 t ADT: 4,500

OLD GRASSY HILL RD

Good

Over: GOOD HILL BROOK

0.1 MI S OF SR 317, CT

Built 1970 Load: 38.6 t ADT: 150

TRINITY PASS ROAD

Good

Over: RIPPOWAM RIVER

300W OF PONUS RIDGE ROAD, CT

Built 1990 Load: 38.7 t ADT: 1,165

WALNUT HILL ROAD

Good

Over: LIMEKILN BROOK

4000 FT N OF RTS 58&302, CT

Built 2014 Load: 38.8 t ADT: 7,845

SSR 490

Good

Over: POOTATUCK RIVER

1500 E OF NUNNAWAUK ROAD, CT

Built 1998 Load: 38.8 t ADT: 11,100

INTERSTATE 95

Good

Over: I91NB US1 SR724 & RAMPS

OVER WATER STREET, CT

Built 2013 Load: 38.9 t ADT: 101,100

INTERSTATE-84 WB

Good

Over: PIERPONT ROAD

.8 MI WEST OF CHESHIRE TL, CT

Built 2006 Load: 38.9 t ADT: 50,850

SR 555 (WEST MAIN

Good

Over: PAN AM RAILROAD

0.4 MILE EAST OF RTE 372, CT

Built 1930 Load: 38.9 t ADT: 9,300

RIVER ROAD

Good

Over: FIVE MILE RIVER

1620FT FR JCT PUTNAM ROAD, CT

Built 2012 Load: 38.9 t ADT: 1,020

CAMP MOWEEN ROAD

Good

Over: YANTIC RIVER

900 SOUTH OF ROUTE 616, CT

Built 2002 Load: 38.9 t ADT: 414

ASPETUCK RIDGE RD

Good

Over: MERRYALL BROOK

200 W OF MEETINGHOUSE RD, CT

Built 2014 Load: 38.9 t ADT: 633

PROSPECT STREET

Good

Over: EIGHT MILE RIVER

495 FT E. OF I-84, CT

Built 1961 Load: 38.9 t ADT: 2,337

WALLER ROAD

Good

Over: BULL MOUNTAIN BROOK

0.1M EAST OF S. KENT RD, CT

Built 1998 Load: 38.9 t ADT: 73

HILLFIELD ROAD

Good

Over: EATON BROOK

1.4 mi West of RT 10, CT

Built 2015 Load: 38.9 t ADT: 311

OLD MAIN STREET

Good

Over: GOFF BROOK

0.2 MI S OF I-91, CT

Built 2014 Load: 38.9 t ADT: 1,300

INTERSTATE-84 WB

Good

Over: SR 535 (RIDGEWOOD ROAD)

.25 MI E OF FARMINGTON TL, CT

Built 1965 Load: 39.2 t ADT: 64,300

ROUTE 184

Good

Over: SHUNOCK RIVER

0.6 MI E OF ROUTE 2, CT

Built 2014 Load: 39.2 t ADT: 4,200

PLUMTREES ROAD

Good

Over: EAST SWAMP BROOK

JCT OF WALNUT HILL ROAD, CT

Built 2016 Load: 39.2 t ADT: 6,600

CHURCH STREET

Good

Over: MOOSUP RIVER

525 S FROM JCT ROUTE 14, CT

Built 1950 Load: 39.2 t ADT: 750

SHERWOOD AVENUE

Good

Over: BYRAM RIVER

OVER BYRAM RIVER, CT

Built 2010 Load: 39.2 t ADT: 3,935

SHINGLE MILL ROAD

Good

Over: ROCK BROOK

1.5 MILE SOUTH OF ROUTE 4, CT

Built 2019 Load: 39.2 t ADT: 63

ROUTE 9 NORTHBOUND

Good

Over: ROUTE 154

1.5 MI N OF I-95, CT

Built 1966 Load: 39.4 t ADT: 12,150

INTERSTATE-95

Good

Over: MOOSE HILL ROAD

1.9 MI S OF ROUTE 77, CT

Built 1958 Load: 39.5 t ADT: 59,500

SR 597

Good

Over: I-84 EB

EXIT 29 I-84 WB, CT

Built 2005 Load: 39.5 t ADT: 4,800

Showing 3,401-3,450 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.