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 138

Fair

Over: DENISON BROOK

.2 MI WEST OF ROUTE 49, CT

Built 1934 Load: 38.1 t ADT: 6,200

INTERSTATE-91 NB

Fair

Over: ROUTE 99

INTERSECTION I-91&ROUTE99, CT

Built 1964 Load: 38.1 t ADT: 71,700

ROUTE 189

Fair

Over: BELDEN BROOK

0.5 MILE SOUTH OF SR 539, CT

Built 1933 Load: 38.1 t ADT: 2,500

ROUTE 168

Fair

Over: MUDDY BROOK

0.4 MILE WEST OF ROUTE 75, CT

Built 1935 Load: 38.1 t ADT: 11,500

ROUTE 8 SOUTHBOUND

Fair

Over: ROUTE 202 (EAST MAIN ST)

ROUTE 8 EXIT 44, CT

Built 1964 Load: 38.1 t ADT: 7,000

INTERSTATE-95 SB

Fair

Over: RIVER RD & MYSTIC RIVER

0.4 MI S OF ROUTE 27, CT

Built 1964 Load: 38.1 t ADT: 26,100

I-84 EB TR 806

Fair

Over: INTERSTATE 84 WB

I-84 E/B EXIT 20, CT

Built 1965 Load: 38.1 t ADT: 7,100

SOAP STREET

Fair

Over: INTERSTATE-395

0.7 MILES N JCT ROUTE 101, CT

Built 1968 Load: 38.1 t ADT: 1,316

SPRING STREET

Fair

Over: WEST RIVER

0.1 MI WEST OF RTE 10, CT

Built 1999 Load: 38.1 t ADT: 5,100

ROUTE 12

Fair

Over: FIVE MILE RIVER

0.1 MI NORTH OF US RTE 6, CT

Built 1968 Load: 38.1 t ADT: 7,600

ROUTE 169

Fair

Over: MASHAMOQUET BROOK

0.2 MILE NORTH OF RTE 101, CT

Built 1936 Load: 38.1 t ADT: 4,200

ROUTE 2

Fair

Over: PROV & WORC RAILROAD

0.3 MI WEST OF JCT RT 165, CT

Built 1941 Load: 38.1 t ADT: 12,900

ROUTE 201

Fair

Over: PACHAUG RIVER

.3 MI NORTH OF ROUTE 165, CT

Built 1989 Load: 38.1 t ADT: 1,300

SWIMMING HOLE RD

Fair

Over: LEADMINE BROOK

1.25 MILE SOUTH OF RTE 4, CT

Built 1989 Load: 38.1 t ADT: 83

INTERSTATE-91 NB

Fair

Over: ROOD AVENUE

0.5 MILE NORTH OF I-291, CT

Built 1991 Load: 38.1 t ADT: 76,050

INTERSTATE-95

Fair

Over: LADDINS ROCK ROAD

.1 MI WEST OF STAMFORD TL, CT

Built 1958 Load: 38.2 t ADT: 121,100

ROUTE 47

Fair

Over: SPRAIN BROOK

1.2 MILE S. OF ROXBURY TL, CT

Built 1956 Load: 38.2 t ADT: 2,100

INTERSTATE 84 EB

Fair

Over: SANDY HILL ROAD

0.6 MI E OF SOUTH ST BR, CT

Built 1964 Load: 38.2 t ADT: 36,900

INTERSTATE 84 WB

Fair

Over: HANOVER ROAD

1.6 MI WEST OF SR 816, CT

Built 1962 Load: 38.2 t ADT: 38,400

ROUTE 181

Fair

Over: BEAVER BROOK

0.5 MI NORTH OF ROUTE 318, CT

Built 1929 Load: 38.2 t ADT: 600

ROUTE 196

Fair

Over: POCOTOPAUG CREEK

.25 MI SOUTH OF JCT RT 16, CT

Built 1929 Load: 38.2 t ADT: 3,000

ROUTE 318

Fair

Over: MORGAN BROOK

100 FEET EAST OF ROUTE 44, CT

Built 1947 Load: 38.2 t ADT: 4,700

SR 723

Fair

Over: FULLING MILL BROOK

150 FT SOUTH OF ROUTE 68, CT

Built 1959 Load: 38.2 t ADT: 10,400

ROUTE 68

Fair

Over: QUINNIPIAC RIVER

150 EAST OF ROUTE 150, CT

Built 1965 Load: 38.2 t ADT: 20,900

I-84 TR 815

Fair

Over: I-84EB RTE72 372 PanAmRR

I84 WB EXT 35 TO RT 72 EB, CT

Built 1969 Load: 38.2 t ADT: 5,800

ROUTE 8 SB RAMP 2

Fair

Over: GRAND STREET

EXIT 3 ROUTE 8 SB, CT

Built 1969 Load: 38.2 t ADT: 10,100

SR860 MILE HILL RD

Fair

Over: HOUSATONIC RAILROAD

ENTRANCE TO HOSPITAL, CT

Built 1957 Load: 38.2 t ADT: 12,300

CAMP AVENUE

Fair

Over: NOROTON RIVER

0.2 MI WEST OF ROUTE 106, CT

Built 1947 Load: 38.2 t ADT: 8,650

RIGA LANE

Fair

Over: WACHOCASTINOOK BROOK

100 W OF JCT MT. RIGA RD, CT

Built 1957 Load: 38.2 t ADT: 80

ROUTE 66

Fair

Over: P & W RAILROAD

INT RTE 66 & RTE 17, CT

Built 1938 Load: 38.2 t ADT: 16,000

I-91 RAMPS 101&103

Fair

Over: INTERSTATE-91

EXIT 44 SB ON & OFF RAMPS, CT

Built 1989 Load: 38.2 t ADT: 10,200

VERNON AVENUE

Fair

Over: HOCKANUM RIVER

200 SO OF WEST MAIN ST, CT

Built 1925 Load: 38.3 t ADT: 3,208

ROUTE 101

Fair

Over: WHITE BROOK

1.7 MILES EAST OF RTE 169, CT

Built 1932 Load: 38.4 t ADT: 9,200

US ROUTE 7

Fair

Over: CL&P PENSTOCKS

450N OF GROVE RD INT.RT7, CT

Built 2008 Load: 38.5 t ADT: 2,300

ROUTE 8 NORTHBOUND

Fair

Over: ROUTE 202 (EAST MAIN ST)

ROUTE 8 NB EXIT 44, CT

Built 1964 Load: 38.5 t ADT: 6,700

ROUTE 341

Fair

Over: HOUSATONIC RAILROAD

75 EAST OF JCT SR 827, CT

Built 1901 Load: 38.5 t ADT: 1,500

HOUSATONIC AVENUE

Fair

Over: ASPETUCK RIVER

200FT NO YOUNGS FIELD RD, CT

Built 1956 Load: 38.5 t ADT: 2,040

ELLIS STREET

Fair

Over: PAN AM RAILROAD

AT END OF EXT 25 RTE 9 NB, CT

Built 1989 Load: 38.5 t ADT: 8,600

MARSH ROAD

Fair

Over: BRISTOL RESERVOIR SPL

200 WEST OF BRISTOL T.L., CT

Built 1940 Load: 38.5 t ADT: 523

OLD RTE 254-LOWER

Fair

Over: NORTHFIELD BROOK

4.8 KM SW OF THOMASTON, CT

Built 1936 Load: 38.5 t ADT: 60

INTERSTATE-395

Fair

Over: OIL MILL ROAD

0.7 MI S OF ROUTE 85, CT

Built 1958 Load: 38.6 t ADT: 24,500

INTERSTATE-84 EB

Fair

Over: ROUTE 10

AT EXIT 32 INTERSTATE 84, CT

Built 1963 Load: 38.6 t ADT: 40,800

ROUTE 124

Fair

Over: ROUTE 15

EXIT 37 ROUTE 15, CT

Built 1937 Load: 38.6 t ADT: 7,800

INTERSTATE 84 WB

Fair

Over: BIOSKI ROAD

1.6 MI WEST OF ROUTE 63, CT

Built 1964 Load: 38.6 t ADT: 36,800

ROUTE 8 SOUTHBOUND

Fair

Over: ECHO LAKE ROAD

1.9 MI. N OF WATERBURY TL, CT

Built 1964 Load: 38.6 t ADT: 14,100

INTERSTATE-95 NB

Fair

Over: ROUTE 117

2.2 MI N OF ROUTE 12, CT

Built 1964 Load: 38.6 t ADT: 25,300

GROVE HILL ROAD

Fair

Over: ROUTE 72

.8 MI EAST RTE 72, CT

Built 1974 Load: 38.6 t ADT: 1,600

ROUTE 9 NORTHBOUND

Fair

Over: ROUTE 148 (WEST MAIN ST)

ROUTE 9 EXIT NO. 6, CT

Built 1967 Load: 38.6 t ADT: 15,000

ROUTE 8 NORTHBOUND

Fair

Over: NORTH WASHINGTON AVENUE

1.7 MI N OF I-95, CT

Built 1970 Load: 38.6 t ADT: 53,700

U.S. ROUTE 7 NB

Fair

Over: NORWALK RIVER

1.3 MILE NORTH OF I-95, CT

Built 1970 Load: 38.6 t ADT: 26,200

Showing 1,401-1,450 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.