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-395 SB

Fair

Over: ABANDONED RAILROAD

APPROX 1 MILE SOUTH EX100, CT

Built 1968 Load: 40.5 t ADT: 10,100

INTERSTATE-384 WB

Fair

Over: SR 534 (CAMP MEETING RD)

0.7 MI WEST OF BOLTON T.L, CT

Built 1968 Load: 40.5 t ADT: 15,850

WASHINGTON AVE #3

Fair

Over: NAUGATUCK RIVER

0.2 MI E OF RT 8 SB EX.30, CT

Built 1956 Load: 40.5 t ADT: 6,000

ROUTE 8

Fair

Over: METRO-NRTH RR&PRIVATE RD

.4 MILES NORTH OF EXIT 23, CT

Built 1981 Load: 40.5 t ADT: 47,700

JONES ROAD

Fair

Over: TEN MILE RIVER

100 N OF JCT COOK HLL RD, CT

Built 2002 Load: 40.5 t ADT: 59

INTERSTATE-91

Fair

Over: ROUTE 220

AT EXIT 48, CT

Built 1960 Load: 40.5 t ADT: 84,400

MARVIN RIDGE ROAD

Fair

Over: ROUTE 15

0.3 MI.W.OF NORWALK T.L., CT

Built 1989 Load: 40.5 t ADT: 1,000

ROUTE 9 NORTHBOUND

Fair

Over: FLORAL PARK ROAD

0.7 MI N OF I-95, CT

Built 1966 Load: 40.6 t ADT: 14,400

INTERSTATE-95

Fair

Over: SHORE ROAD # 1

WEST OF EXIT 3, CT

Built 1958 Load: 40.8 t ADT: 109,200

INTERSTATE-395

Fair

Over: OLD COLCHESTER ROAD

2.5 MI N ROUTE 85, CT

Built 1958 Load: 40.8 t ADT: 30,700

SR 695 WESTBOUND

Fair

Over: INTERSTATE-395 NB

.1 MI NORTH OF SR 695 JCT, CT

Built 1958 Load: 40.8 t ADT: 2,200

US ROUTE 7 SB

Fair

Over: SR 805 (FEDERAL ROAD)

0.5 MI SOUTH EXIT 11, CT

Built 1962 Load: 40.8 t ADT: 22,800

ROUTE 12

Fair

Over: FIVE MILE RIVER

1.6 MILE NO. OF ROUTE 101, CT

Built 1937 Load: 40.8 t ADT: 5,100

ROUTE 34

Fair

Over: NAUGATUCK RIVER

0.1 MI E OF ROUTE 8, CT

Built 1959 Load: 40.8 t ADT: 33,800

INTERSTATE 84 EB

Fair

Over: ROUTE 188

.7 MI WEST OF ROUTE 63, CT

Built 1964 Load: 40.8 t ADT: 35,800

ROUTE 169

Fair

Over: CORY BROOK

1 MI S OF SR 668, CT

Built 1931 Load: 40.8 t ADT: 3,300

ROUTE 205

Fair

Over: QUINEBAUG RIVER & CANAL

.5 MILE NORTH OF ROUTE 12, CT

Built 1959 Load: 40.8 t ADT: 4,300

ROUTE 272

Fair

Over: W BR NAUGATUCK RIVER

2 MILES NORTH OF ROUTE 4, CT

Built 1957 Load: 40.8 t ADT: 1,300

I-91 & TR 841

Fair

Over: CONNECTICUT SOUTHERN RR

N ENTRANCE AT PED. BRIDGE, CT

Built 1950 Load: 40.8 t ADT: 108,100

ROUTE 8 NORTHBOUND

Fair

Over: ROUTE 4 (EAST ELM ST.)

AT EXIT 44, CT

Built 1964 Load: 40.8 t ADT: 6,500

ROUTE 3

Fair

Over: COGINCHAUG RIVER

0.2 MI NORTH OF JCT RT 66, CT

Built 1974 Load: 40.8 t ADT: 14,700

PHILO CURTIS ROAD

Fair

Over: I-84 EB & I-84 RAMP 630

ON-RAMP FROM EXIT 11, CT

Built 1973 Load: 40.8 t ADT: 2,642

INTERSTATE-395 SB

Fair

Over: US ROUTE 44 (SCHOOL ST)

2.7 MI SOUTH OF ROUTE 200, CT

Built 1965 Load: 40.8 t ADT: 11,200

ROUTE 68

Fair

Over: INTERSTATE-91

1.0 MI NORTH OF DURHAM RD, CT

Built 2004 Load: 40.8 t ADT: 17,200

CARPENTER LANE

Fair

Over: INTERSTATE-91

.54 MI NORTH OF RTE 68, CT

Built 1965 Load: 40.8 t ADT: 1,645

INTERSTATE-84 EB

Fair

Over: SR 536 (WOODFORD AVENUE)

AT EX 34 CROOKED ST, CT

Built 1969 Load: 40.8 t ADT: 36,900

I-84 TR 824

Fair

Over: PARKING LOT

ON RAMP SISSON TO I-84 WB, CT

Built 1969 Load: 40.8 t ADT: 4,100

ROUTE 72 NORTHBOUN

Fair

Over: WOOSTER STREET

0.1 MILE SOUTH OF I-84, CT

Built 1970 Load: 40.8 t ADT: 34,100

ROUTE 40 SB

Fair

Over: US ROUTE 5

AT ON RAMP FOR EXIT 1, CT

Built 1972 Load: 40.8 t ADT: 23,200

ROUTE 9 NORTHBOUND

Fair

Over: WEST BRIDGE STREET

0.2 MI NORTH OF ROUTE 80, CT

Built 1967 Load: 40.8 t ADT: 13,900

ROUTE 8 SOUTHBOUND

Fair

Over: GRAND STREET

1.6 MI N OF I-95, CT

Built 1969 Load: 40.8 t ADT: 44,200

US ROUTE 7 & RAMP

Fair

Over: I-95 & TR802 RTE 7 RMP 1

INTERSTATE-95 EXIT 15, CT

Built 1970 Load: 40.8 t ADT: 36,700

SR 508

Fair

Over: PATRICK FLOOD ROAD

0.5 MI W OF I-84, CT

Built 1972 Load: 40.8 t ADT: 34,900

SODOM ROAD

Fair

Over: KONKAPOT RIVER

500 S OF OLD TPKE N JCT, CT

Built 1956 Load: 40.8 t ADT: 408

MAIN STREET

Fair

Over: PIPER BROOK

250 NORTH OF FRANCIS AVE, CT

Built 1986 Load: 40.8 t ADT: 8,750

ROUTE 106

Fair

Over: SILVERMINE RIVER

WILTON - NEW CANAAN TL, CT

Built 1990 Load: 40.8 t ADT: 2,900

ROUTE 154

Fair

Over: BIBLE ROCK BROOK

0.7 MI S OF SSR 410, CT

Built 1939 Load: 40.8 t ADT: 17,500

POTHIER ROAD

Fair

Over: NICKEL MINE BROOK

0.5 MILE NORTH OF ROUTE 4, CT

Built 1910 Load: 40.8 t ADT: 380

SOUTH CENTER ST

Fair

Over: INTERSTATE-91

2.6 MI NORTH OF ROUTE 75, CT

Built 1992 Load: 40.8 t ADT: 3,600

US ROUTE 1

Fair

Over: SAUGATUCK RIVER

50 FT EAST OF JUNCTION 33, CT

Built 1992 Load: 40.8 t ADT: 18,800

INTERSTATE 95 SOUT

Fair

Over: CONNECTICUT RV FERRY RD

.72 MI. W. OF ROUTE 156, CT

Built 1993 Load: 40.8 t ADT: 36,400

US ROUTE 44

Fair

Over: KNOWLTON BROOK

.7 MI WEST OF ROUTE 74, CT

Built 1929 Load: 41.0 t ADT: 3,000

INTERSTATE-91 SB

Fair

Over: SMITH STREET

1.49 MI SOUTH OF RTE 372, CT

Built 1965 Load: 41.0 t ADT: 53,400

US ROUTE 1 (Boston

Fair

Over: INTERSTATE-95

0.8 MI N OF ROUTE 161, CT

Built 1958 Load: 41.1 t ADT: 12,500

ROUTE 2

Fair

Over: SR 516 - WILLOW ST. EXT.

AT EXIT 5, CT

Built 1962 Load: 41.1 t ADT: 67,700

ROUTE 8

Fair

Over: ABANDONED RAILROAD

0.4 MI N OF ROUTE 34, CT

Built 1951 Load: 41.1 t ADT: 73,900

OLD HAWLEYVILLE RD

Fair

Over: INTERSTATE 84

.6 MI WEST OF RT 25, CT

Built 1962 Load: 41.1 t ADT: 661

ROUTE 372

Fair

Over: MATTABESSET RIVER

100 WEST OF SEYMOUR ROAD, CT

Built 1942 Load: 41.1 t ADT: 9,100

U.S. ROUTE 6 EB

Fair

Over: WILLIMANTIC RIVER

1.1 MI EAST OF JCT.6 & 66, CT

Built 1971 Load: 41.1 t ADT: 8,950

DURHAM ROAD

Fair

Over: INTERSTATE-91

betwn exits 14 & 15 I-91, CT

Built 1965 Load: 41.1 t ADT: 1,300

Showing 1,601-1,650 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.