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 272

Good

Over: HART BROOK

3.6 MILES NORTH OF RTE. 4, CT

Built 1958 Load: 39.5 t ADT: 1,100

ROUTE 114

Good

Over: RACE BROOK

0.2 MI N OF ROUTE 34, CT

Built 2016 Load: 39.5 t ADT: 6,500

EAST LIBERTY ST

Good

Over: MAD RIVER

1.0 MILE EAST OF SR 847, CT

Built 1907 Load: 39.5 t ADT: 3,500

ADDISON ROAD

Good

Over: SALMON BROOK

1000 (N) INT RTE 94, CT

Built 2013 Load: 39.5 t ADT: 3,500

EDMUND ROAD

Good

Over: PACHAUG RIVER

1000 SOUTH OF ROUTE 201, CT

Built 2013 Load: 39.5 t ADT: 529

VALLEY ROAD

Good

Over: SILVERMINE RIVER

JCT OF DEEP VALLEY ROAD, CT

Built 1951 Load: 39.5 t ADT: 905

INTERSTATE-91 SB

Good

Over: CAPEN STREET

.6 MI NORTH OF ROUTE 178, CT

Built 1991 Load: 39.5 t ADT: 74,450

COUNTRY CLUB ROAD

Good

Over: HONEYPOT BROOK

0.6 MI E OF ROUTE 10, CT

Built 2010 Load: 39.5 t ADT: 1,045

ROUTE 8 RAMP 031

Good

Over: METRO-NORTH & RR DRIVE

ROUTE 8 EXIT 15, CT

Built 1996 Load: 39.8 t ADT: 7,900

ROUTE 71

Good

Over: HARBOR BROOK

0.2 MI S OF COOPER ST., CT

Built 2012 Load: 39.8 t ADT: 7,200

POPPLE SWAMP ROAD

Good

Over: FURNACE BROOK

660 FT N. OF ROUTE 4, CT

Built 1994 Load: 39.8 t ADT: 218

INDIAN FIELD ROAD

Good

Over: INTERSTATE-95

EXIT 4, CT

Built 1958 Load: 39.9 t ADT: 11,350

ROUTE 17

Good

Over: LONG HILL BROOK

0.7 MI N OF ROUTE 155, CT

Built 2001 Load: 39.9 t ADT: 13,100

ROUTE 8 SOUTHBOUND

Good

Over: SR 700 FAIRFIELD AV

0.7 MI N OF I-95, CT

Built 1968 Load: 39.9 t ADT: 41,600

SR 642

Good

Over: NEW ENGLAND CENTRAL RR

.67M W JCT INTERSTATE-395, CT

Built 1937 Load: 39.9 t ADT: 9,300

US ROUTE 44

Good

Over: CHERRY BROOK

0.1 MILE WEST OF RTE. 179, CT

Built 2006 Load: 39.9 t ADT: 10,300

OLD FARMS ROAD

Good

Over: FARMINGTON RIVER

500 FEET WEST OF ROUTE 10, CT

Built 2020 Load: 39.9 t ADT: 5,300

GILLETTE ROAD

Good

Over: TORRINGFORD BROOK

.5 MILE WEST OF ROUTE 202, CT

Built 1956 Load: 39.9 t ADT: 408

ROUTE 121

Good

Over: WEPAWAUG RIVER

0.2 MI S OF ROUTE 15, CT

Built 1984 Load: 39.9 t ADT: 5,800

ROUTE 151

Good

Over: MOODUS RIVER

105 FT N OF ROUTE 149, CT

Built 2010 Load: 39.9 t ADT: 2,000

THE BOULEVARD

Good

Over: HOUSATONIC RAILROAD

1 MI NORTH OF RTE 6 INTER, CT

Built 1989 Load: 39.9 t ADT: 1,263

ROUTE 169

Good

Over: KITT BROOK

1 MI SOUTH OF ROUTE 14, CT

Built 1990 Load: 39.9 t ADT: 3,500

SPRUCE BROOK ROAD

Good

Over: TRANSYLVANIA BRK OVRFLOW

300 west of Route 172, CT

Built 2018 Load: 39.9 t ADT: 364

ROUTE 69

Good

Over: HAMILTON PARK ROAD

0.4 MILE NORTH OF I-84, CT

Built 1949 Load: 40.1 t ADT: 19,400

ROUTE 68

Good

Over: NAUG RV RTE 8 MNRR SR710

RT 68 OVER RTE 8 METRO N., CT

Built 1960 Load: 40.2 t ADT: 12,200

US ROUTE 1

Good

Over: QUANADUCK COVE

0.4 MI N OF US ROUTE 1A, CT

Built 2013 Load: 40.2 t ADT: 5,700

ROUTE 4

Good

Over: IVY MOUNTAIN BROOK

1 MILE EAST OF ROUTE 63, CT

Built 1998 Load: 40.2 t ADT: 7,100

FLAT ROCK PLACE

Good

Over: WETLANDS

0.5 M EAST RTE 154, CT

Built 1996 Load: 40.2 t ADT: 3,515

I-91 NB TO ROUTE 5

Good

Over: ROUTE 5/15 SB

I-91 NORTHBOUND EXIT 29, CT

Built 2021 Load: 40.2 t ADT: 21,700

CEDAR STREET

Good

Over: INTERSTATE-95

0.5 MI SOUTH OF US RTE 7, CT

Built 2014 Load: 40.5 t ADT: 2,600

SR 616

Good

Over: BARTLETT BROOK

.7 MI E COLCHESTER TL, CT

Built 2014 Load: 40.5 t ADT: 1,600

INTERSTATE-691 EB

Good

Over: KNOTTER DRIVE

1.1 MI W OF ROUTE 10, CT

Built 1986 Load: 40.5 t ADT: 28,500

LANE STREET

Good

Over: MEANS BROOK

0.1 MI E OF HUNTINGTON RD, CT

Built 2020 Load: 40.5 t ADT: 120

NONNEWAUG ROAD

Good

Over: EAST SPRING BROOK

1.23 MI EAST OF ROUTE 61, CT

Built 2021 Load: 40.5 t ADT: 253

INTERSTATE-291 EB

Good

Over: INTERSTATE 84

I-291 TO I-84 EASTBOUND, CT

Built 1993 Load: 40.5 t ADT: 9,200

BROOKSVALE AVENUE

Good

Over: JEPP BROOK

1/4 mi.west of Route 10, CT

Built 2013 Load: 40.5 t ADT: 850

ROUTE 82

Good

Over: SUCCOR BROOK

0.3 MI E OF ROUTE 149, CT

Built 2014 Load: 40.8 t ADT: 5,700

WOODLAND STREET

Good

Over: CENTRAL NEW ENGLAND RR

50 SOUTH OF HOMESTEAD ST, CT

Built 2005 Load: 40.8 t ADT: 10,900

WALNUT STREET

Good

Over: FALLS RIVER

90 FT S OF MAIN STREET, CT

Built 2018 Load: 40.8 t ADT: 963

MERRITT AVENUE

Good

Over: WEST RIVER

100 FT E OF ROUTE 69, CT

Built 1940 Load: 40.8 t ADT: 1,328

WEST SIDE ROAD

Good

Over: WEST SIDE POND BROOK

AT BARTHOLOMEW HILL ROAD, CT

Built 1955 Load: 40.8 t ADT: 211

RUBBER AVENUE

Good

Over: LONG MEADOW POND BROOK

AT NAUGATUCK HIGH SCHOOL, CT

Built 1983 Load: 40.8 t ADT: 7,000

US ROUTE 7

Good

Over: BLACKBERRY RIVER

0.2 MI SOUTH OF JCT US 44, CT

Built 1989 Load: 40.8 t ADT: 6,200

ROUTE 69

Good

Over: PAN AM RAILROAD

0.2 MILE NORTH OF ROUTE 6, CT

Built 1992 Load: 40.8 t ADT: 5,600

U.S. ROUTE 44

Good

Over: NORTH BRANCH PARK RIVER

0.3 MILE EAST OF RTE. 189, CT

Built 1993 Load: 40.8 t ADT: 15,000

ROUTE 2

Good

Over: LAKE OF ISLES DRIVE

1.9 MI E OF ROUTE 164, CT

Built 2009 Load: 40.8 t ADT: 9,600

ADAMS STREET

Good

Over: HOCKANUM RIVER

0.6 MI S OF TOLLAND TPKE, CT

Built 1983 Load: 40.9 t ADT: 12,100

BASSETT ROAD

Good

Over: INTERSTATE-91

700 NORTH OF WILSON AVE., CT

Built 2017 Load: 41.1 t ADT: 3,800

ROUTE 8 NORTHBOUND

Good

Over: SR 700 FAIRFIELD AVE.

0.7 MI N OF I-95, CT

Built 1969 Load: 41.1 t ADT: 41,600

ROUTE 69

Good

Over: INTERSTATE 84

AT EXIT23 INTERSTATE 84 W, CT

Built 2018 Load: 41.1 t ADT: 9,500

Showing 3,451-3,500 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.