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 84 WB

Fair

Over: SR 805 EAGLE RD & HRR

EXIT 7, CT

Built 1962 Load: 30.1 t ADT: 40,700

SR 598 EASTBOUND

Fair

Over: NO NOTABLE FEATURE

ACCESS TO I-91S FROM 598E, CT

Built 1964 Load: 30.1 t ADT: 9,700

NORTH ANGUILLA ROA

Fair

Over: INTERSTATE 95 SB

1.0 MI N OF ROUTE 234, CT

Built 1964 Load: 30.1 t ADT: 697

US ROUTE 6 EB

Fair

Over: NATCHAUG RIVER

0.2 MI WEST OF WINDHAM TL, CT

Built 1973 Load: 30.1 t ADT: 10,450

GROTON LONG POINT

Fair

Over: AMTRAK RAILROAD

0.1 MI S OF ROUTE 215, CT

Built 1961 Load: 30.1 t ADT: 3,334

FOREST STREET

Fair

Over: ABANDONED DOT RAILROAD

.2 MILES E. OF MIGEON AVE, CT

Built 1915 Load: 30.1 t ADT: 2,340

WOLCOTT AVENUE

Fair

Over: W BRANCH NAUGATUCK RIVER

0.2 MI S RTE 4 @ MIGEON, CT

Built 1961 Load: 30.1 t ADT: 1,892

ROUTE 3 NORTHBOUND

Fair

Over: INTERSTATE-91

OVER I-91, CT

Built 1994 Load: 30.1 t ADT: 14,700

SR 724

Fair

Over: US 1 AND METRO NORTH

0.6 MI W OF I-95, CT

Built 1960 Load: 30.2 t ADT: 62,600

ASPETUCK RIDGE RD

Fair

Over: WEST ASPETUCK RIVER

370-FT NORTH OF SAND ROAD, CT

Built 1990 Load: 30.2 t ADT: 1,229

US ROUTE 1

Fair

Over: PATCHOGUE RIVER

1.1 MI S OF ROUTE 153, CT

Built 1925 Load: 30.5 t ADT: 7,400

ROUTE 2 WESTBOUND

Fair

Over: SR 608 NWCH/CLCHST

.67 MI WEST OF NORWICH TL, CT

Built 1961 Load: 30.5 t ADT: 13,300

SR 805 (FEDERAL RO

Fair

Over: BEAVER BROOK

INT OF SR 840 & SR805, CT

Built 1962 Load: 30.5 t ADT: 22,100

ROUTE 15

Fair

Over: CONNOLLY PKWY

0.2 MI N OF ROUTE 10, CT

Built 1948 Load: 30.5 t ADT: 69,700

ROUTE 74

Fair

Over: INTERSTATE 84

1.5 MI W OF WILLINGTON TL, CT

Built 1952 Load: 30.5 t ADT: 4,200

ROUTE 118

Fair

Over: SPRUCE BROOK

3.62 MI E OF RTE 63, CT

Built 1960 Load: 30.5 t ADT: 4,000

INTERSTATE-91 SB

Fair

Over: RAMP D&F I-84 US RTE 44

0.16 MILE NORTH OF RTE 2, CT

Built 1961 Load: 30.5 t ADT: 49,100

SR 620

Fair

Over: MASHAPAUG POND

1500 NORTH OF ROUTE 171, CT

Built 1953 Load: 30.5 t ADT: 200

SR 598 EB TR 803

Fair

Over: SR 598 WB &CONN SOUTHERN

RAMP FROM SR598 TO I91 NB, CT

Built 1964 Load: 30.5 t ADT: 9,300

PHILO CURTIS RD #1

Fair

Over: I-84 WB & I-84 RAMP 031

I-84 AT EXIT 11, CT

Built 1973 Load: 30.5 t ADT: 2,630

SO MAIN STREET #1

Fair

Over: ROUTE 2

AT EXIT 15, CT

Built 1966 Load: 30.5 t ADT: 1,471

ROUTE 8 NORTHBOUND

Fair

Over: WARREN ST& S FRONTAGE RD

EXIT 27A I-95 N B, CT

Built 1968 Load: 30.5 t ADT: 12,250

INTERSTATE-384 EB

Fair

Over: BIDWELL STREET

0.1 MILE EAST OF EXIT 1, CT

Built 1968 Load: 30.5 t ADT: 29,850

ROUTE 40 SB

Fair

Over: ROUTE 22 & MILL RIVER

0.3 MILE S. OF ROUTE 10, CT

Built 1976 Load: 30.5 t ADT: 11,700

INTERSTATE-91 NB

Fair

Over: LEIBERT ROAD

0.1 MILE SOUTH OF EXIT 33, CT

Built 1991 Load: 30.5 t ADT: 76,000

WALLACE STREET

Fair

Over: AMTRAK RAILROAD

.2 MI NORTH GRAND AVENUE, CT

Built 1906 Load: 30.5 t ADT: 2,242

OAK STREET NO. 2

Fair

Over: QUINNIPIAC RIVER

0.1 MI W OF ROUTE 71, CT

Built 1989 Load: 30.5 t ADT: 2,596

I-84/91 TR841/858

Fair

Over: U.S. 44 WB & MARKET ST

RAMPS FROM 91 NB&SB TO 84, CT

Built 1990 Load: 30.5 t ADT: 34,400

BERKSHIRE AVENUE

Fair

Over: PEQUONNOCK RIVER

0.4 MI E OF US ROUTE 1, CT

Built 1990 Load: 30.5 t ADT: 9,090

MILITARY HIGHWAY

Fair

Over: MILL COVE

0.8 MI W OF ROUTE 12, CT

Built 1997 Load: 30.5 t ADT: 1,300

PARKVIEW DRIVE

Fair

Over: ROARING BROOK

.5 MILES EAST of RTE.177, CT

Built 1965 Load: 30.5 t ADT: 209

ROUTE 12

Fair

Over: SHETUCKET RIVER

NORWICH-LISBON TOWN LINE, CT

Built 1939 Load: 30.7 t ADT: 5,000

US ROUTE 1

Fair

Over: LIEUTENANT RIVER

0.5 MI N OF ROUTE 156, CT

Built 1941 Load: 30.7 t ADT: 11,000

I-91 SB & TR 835

Fair

Over: CONNECTICUT SOUTHERN RR

AT EXIT 29A, CT

Built 1958 Load: 30.7 t ADT: 47,700

INTERSTATE-95

Fair

Over: US RT. 1 SB AND AMTRAK

0.3 MI S OF ROUTE 100, CT

Built 1958 Load: 30.8 t ADT: 76,400

INTERSTATE-395

Fair

Over: SR 647 (LATHROP ROAD)

3.7 MI NORTH OF ROUTE 201, CT

Built 1958 Load: 30.8 t ADT: 25,000

U.S. ROUTE 6

Fair

Over: NONEWAUG RIVER

0.4 MI NORTH OF RT 47, CT

Built 1928 Load: 30.8 t ADT: 7,400

SR 816 (GLEN RD)

Fair

Over: HOUSATONIC RIVER

GLEN RD O/ LAKE ZOAR, CT

Built 1936 Load: 30.8 t ADT: 2,000

ROUTE 15 NB

Fair

Over: SR 719

ROUTE 15 EXIT NO. 40, CT

Built 1938 Load: 30.8 t ADT: 25,220

ROUTE 8

Fair

Over: HULL STREET

2.4 MI NORTH OF ROUTE 34, CT

Built 1956 Load: 30.8 t ADT: 63,800

ROUTE 14

Fair

Over: BEAVER BROOK

1.5 MI WEST OF ROUTE 97, CT

Built 1939 Load: 30.8 t ADT: 4,300

WIRE MILL ROAD

Fair

Over: ROUTE 15

0.4 MI NORTH OF ROUTE 104, CT

Built 1938 Load: 30.8 t ADT: 4,277

ROUTE 15

Fair

Over: ROUTE 106

ROUTE 15 EXIT NO. 36, CT

Built 1937 Load: 30.8 t ADT: 75,620

ROUTE 15

Fair

Over: SILVERMINE AVENUE

0.5 MI S OF US ROUTE 7, CT

Built 1938 Load: 30.8 t ADT: 72,400

NEWTOWN TURNPIKE

Fair

Over: ROUTE 15

0.4 MI S OF ROUTE 33, CT

Built 1939 Load: 30.8 t ADT: 3,600

MOREHOUSE DR

Fair

Over: ROUTE 15

0.8 MI S OF ROUTE 59, CT

Built 1939 Load: 30.8 t ADT: 674

PLATTSVILLE ROAD

Fair

Over: ROUTE 15

2.6 MI S OF ROUTE 25, CT

Built 1939 Load: 30.8 t ADT: 750

MADISON AVENUE

Fair

Over: ROUTE 15

0.6 MI S OF ROUTE 111, CT

Built 1939 Load: 30.8 t ADT: 3,200

ROUTE 15

Fair

Over: RESERVOIR AVENUE

0.9 MI SO OF RTE 127, CT

Built 1939 Load: 30.8 t ADT: 69,800

ROUTE 34

Fair

Over: ROUTE 15

ROUTE 15 EXIT 57/58, CT

Built 1941 Load: 30.8 t ADT: 30,100

Showing 451-500 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.