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

INTERSTATE-95

Fair

Over: SCHOOL HOUSE ROAD

0.5 MI N OF ROUTE 166, CT

Built 1957 Load: 56.1 t ADT: 48,000

ROUTE 272

Fair

Over: SPILLWAY

1.2 MI SOUTH OF GOSHEN TL, CT

Built 1961 Load: 56.1 t ADT: 1,100

INTERSTATE-91 NB

Fair

Over: ROUTE 20 EASTBOUND

0.3 MILE NORTH OF EXIT 40, CT

Built 1992 Load: 56.1 t ADT: 44,000

I-91 & NB C-D RDWY

Fair

Over: I-91 NORTHBOUND RAMP 188

400 SOUTH OF FOUNDERS BR, CT

Built 1998 Load: 56.1 t ADT: 102,000

ROUTE 4

Fair

Over: FARMINGTON RIVER

INT OF RTE 4 & RIVER RD., CT

Built 1958 Load: 56.2 t ADT: 12,300

ROUTE 8 NORTHBOUND

Fair

Over: HARWINTON AVENUE

0.4 MI N. OF HARWINTON TL, CT

Built 1966 Load: 56.2 t ADT: 12,400

INTERSTATE-691 WB

Fair

Over: GRAVEL STREET

.31 EAST OF EXIT ROUTE 5, CT

Built 1965 Load: 56.2 t ADT: 41,200

ROUTE 9 NORTHBOUND

Fair

Over: RT 154 VALLEY RR WARD BK

ROUTE 9 EXIT NO. 4, CT

Built 1967 Load: 56.2 t ADT: 17,400

EAST MAIN STREET

Fair

Over: HARBOR BROOK

190 FT E OF STATE ST, CT

Built 1960 Load: 56.2 t ADT: 8,700

INTERSTATE-91 SB

Fair

Over: I-91 TR 807

ROUTE 91 EXIT NO. 13, CT

Built 1965 Load: 56.3 t ADT: 32,300

ROUTE 2

Fair

Over: ROUTE 78 EASTBOUND

1.4 MI E OF I-95, CT

Built 1975 Load: 56.3 t ADT: 6,900

INTERSTATE-84

Fair

Over: NEW ENGLAND CENTRAL RR

0.74 MI FROM TOLLAND TL, CT

Built 1953 Load: 56.3 t ADT: 58,100

ROUTE 8 NB

Fair

Over: RAMP FROM LOWER DERBY RD

.8M S OF ENT 21 ROUTE 8NB, CT

Built 1961 Load: 56.4 t ADT: 52,800

INTERSTATE 84 EB

Fair

Over: POOTATUCK RIVER

.5 MILE BEFORE EXIT 11, CT

Built 1973 Load: 56.4 t ADT: 41,200

ROUTE 9 RAMP 028

Fair

Over: ROUTE 81

0.2 MI. N OF RTE 9 EXIT-9, CT

Built 1965 Load: 56.4 t ADT: 3,700

COLD SPRING ROAD

Fair

Over: RIPPOWAM RIVER

0.4 MI W OF ROUTE 137, CT

Built 1935 Load: 56.4 t ADT: 7,470

INTERSTATE 84 WB

Fair

Over: WASHINGTON STREET

.25 MILES WEST OF EXIT 24, CT

Built 1980 Load: 56.4 t ADT: 46,700

ROUTE 175

Fair

Over: PIPER BROOK

.42MI E OF NEW BRITAIN TL, CT

Built 1980 Load: 56.4 t ADT: 29,700

INTERSTATE 84 EB

Fair

Over: ROUTE 34

.25 MILES WEST OF EXIT 11, CT

Built 1972 Load: 56.5 t ADT: 38,900

ROUTE 25 NB

Fair

Over: ROUTE 25 TR 801

0.1 MI N OF ROUTE 15, CT

Built 1980 Load: 56.5 t ADT: 15,100

ROUTE 9

Fair

Over: CTFASTRAK BUSWAY

1.32 MI N OF JCT ROUTE 72, CT

Built 1985 Load: 56.5 t ADT: 73,800

ROUTE 262

Fair

Over: NAUGATUCK RIVER

0.2 MILE EAST OF ROUTE 8, CT

Built 1988 Load: 56.5 t ADT: 5,600

I-84 WB & RAMP 17

Fair

Over: US ROUTES 6 AND 202

AT THE I-84 ROUTE 7 SPLIT, CT

Built 1962 Load: 56.6 t ADT: 50,100

INTERSTATE-95

Fair

Over: MAPLE LANE

0.4 MI S OF SASCO CRK RD, CT

Built 1958 Load: 56.7 t ADT: 110,400

I-95 & I-95 RAMP 1

Fair

Over: ROUTE 130 WESTBOUND

0.6 MI N OF ROUTE 113, CT

Built 1958 Load: 56.7 t ADT: 95,100

ROUTE 89

Fair

Over: MOUNT HOPE RIVER

2.1 MI SOUTH OF ROUTE 44, CT

Built 1939 Load: 56.7 t ADT: 1,600

INTERSTATE 691 WES

Fair

Over: BEE STREET

0.2 MI WEST OF I-91, CT

Built 1965 Load: 56.7 t ADT: 20,700

US ROUTE 7 SB

Fair

Over: UNION PARK SOUTH

ADJ INTERSECT W- ROUTE 1, CT

Built 1970 Load: 56.7 t ADT: 27,500

ORCHARD ROAD

Fair

Over: BELCHER BROOK

0.5 MI W OF US ROUTE 15, CT

Built 1974 Load: 56.7 t ADT: 1,200

INTERSTATE-95

Fair

Over: RTE 113 (HOLLISTER AVE.)

0.7 MI N OF ROUTE 130, CT

Built 1959 Load: 56.9 t ADT: 93,800

INTERSTATE 84

Fair

Over: ROUTE 39

0.4 MI S OF ROUTE 37, CT

Built 1962 Load: 57.0 t ADT: 91,900

INTERSTATE-91 NB

Fair

Over: WILLOW STREET

150 FT W OF US RT 5, CT

Built 1965 Load: 57.0 t ADT: 67,300

ROUTE 175

Fair

Over: SSR 405 (MOUNTAIN RD)

.5 M W OF WETHERSFIELD TL, CT

Built 1968 Load: 57.0 t ADT: 25,300

MACEDONIA BROOK RD

Fair

Over: MACEDONIA BROOK

.55 MILES N. OF ROUTE 341, CT

Built 1948 Load: 57.0 t ADT: 318

INTERSTATE-91 NB

Fair

Over: AMTRAK RAILROAD

AT EXIT 34, CT

Built 1988 Load: 57.0 t ADT: 66,700

INTERSTATE 95

Fair

Over: WORDIN AVENUE NO. 2

0.7 MI S OF ROUTE 8, CT

Built 1959 Load: 57.1 t ADT: 125,000

INTERSTATE-95 SB

Fair

Over: RTE 184 &RTE 12 RAMP 005

1.7 N. OF GOLD STAR, CT

Built 1964 Load: 57.1 t ADT: 27,500

I-84 RAMP 030

Fair

Over: ROUTE 34

Over ROUTE 34, CT

Built 1973 Load: 57.1 t ADT: 11,000

ROUTE 40 SB

Fair

Over: ROUTE 10

3MI NORTHOF INTERSTATE 91, CT

Built 1976 Load: 57.1 t ADT: 9,300

US ROUTE 7 SB

Fair

Over: STILL RIVER

NEAR EXIT 7 INTERSTATE-84, CT

Built 1976 Load: 57.1 t ADT: 20,800

MALTBY STREET

Fair

Over: COPPER MINE BROOK

.2 MI WEST OF STAFFORD AV, CT

Built 1979 Load: 57.1 t ADT: 8,277

INTERSTATE-91 NB

Fair

Over: WESTON STREET

0.2 MILE SOUTH OF EXIT 34, CT

Built 1990 Load: 57.1 t ADT: 70,800

ROUTE 2

Fair

Over: MAIN STREET

0.1 MI WEST OF EXIT 5A WB, CT

Built 1962 Load: 57.2 t ADT: 67,100

US ROUTE 44

Fair

Over: BIGELOW BROOK

.8 MI WEST OF RTE 198, CT

Built 1929 Load: 57.2 t ADT: 7,500

INTERSTATE-91 NB

Fair

Over: HUMPHREY STREET

1.1 MI N OF I-95, CT

Built 1965 Load: 57.2 t ADT: 68,800

ROUTE 101

Fair

Over: QUINEBAUG RIVER

AT KILLINGLY TOWN LINE, CT

Built 1957 Load: 57.3 t ADT: 9,100

INTERSTATE-91 SB

Fair

Over: HUMPHREY STREET

1.1 MI N OF I-95, CT

Built 1965 Load: 57.3 t ADT: 69,000

INTERSTATE-91 NB

Fair

Over: POND HILL ROAD

INTERSTATE-91 EXIT NO. 13, CT

Built 1965 Load: 57.3 t ADT: 41,800

ROUTE 9 NORTHBOUND

Fair

Over: KELSEY HILL ROAD

1.1 MI S OF ROUTE 80, CT

Built 1967 Load: 57.3 t ADT: 17,000

INTERSTATE 691 EAS

Fair

Over: QUINNIPIAC RIVER

50 FT EAST OF CHESHIRE TL, CT

Built 1984 Load: 57.3 t ADT: 30,800

Showing 2,501-2,550 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.