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

Fair

Over: WELTON BROOK

0.8 MI EAST MIDDLEBURY TL, CT

Built 1965 Load: 99.9 t ADT: 83,400

ROUTE 25

Fair

Over: POND BROOK

.2 MI NORTH OF RT.6 & 25, CT

Built 1961 Load: 99.9 t ADT: 11,800

ROUTE 9 RAMP 028

Fair

Over: PONSET BROOK

ROUTE 9 NB EXIT 9 ON RAMP, CT

Built 1965 Load: 99.9 t ADT: 3,500

ROUTE 72 & RAMPS

Fair

Over: QUINNIPIAC RIVER

1.80 MILE SOUTH ROUTE 177, CT

Built 1969 Load: 99.9 t ADT: 57,300

US ROUTE 1

Fair

Over: FOUR MILE RIVER

3.5 MI S OF ROUTE 161, CT

Built 1982 Load: 99.9 t ADT: 3,700

ROUTE 9

Fair

Over: FALLS RIVER

0.8 MI S OF ROUTE 154, CT

Built 1967 Load: 99.9 t ADT: 34,000

INTERSTATE-395 SB

Fair

Over: FIVE MILE RIVER

1.5 MILE N OF ROUTE 101, CT

Built 1968 Load: 99.9 t ADT: 15,500

INTERSTATE-395 NB

Fair

Over: FIVE MILE RIVER

1.5 MILE N OF ROUTE 101, CT

Built 1968 Load: 99.9 t ADT: 14,700

VACANT ROUTE 9 SB

Fair

Over: INTERSTATE-84

FARMINGTON @STACK, CT

Built 1969 Load: 99.9 t

VACANT RTE. 9 RAMP

Fair

Over: INTERSTATE-84

THIRD LEVEL-EXIT 39A, CT

Built 1969 Load: 99.9 t

INTERSTATE-384

Fair

Over: GLOBE HOLLOW BROOK

.24 MI WEST OF ROUTE 83, CT

Built 1971 Load: 99.9 t ADT: 53,700

HUNTINGDON AVENUE

Fair

Over: HANCOCK BROOK

0.2 MILES W OF SR 847, CT

Built 1940 Load: 99.9 t ADT: 24,900

ROUTE 66

Fair

Over: ABANDONED RR & DRAINAGE

0.1 MI E OF ROUTE 16, CT

Built 1977 Load: 99.9 t ADT: 8,600

STARR AVENUE

Fair

Over: BOGGS POND BROOK

225 FT N OF I-84, CT

Built 1960 Load: 99.9 t ADT: 12,680

FREIGHT STREET

Fair

Over: NAUGATUCK RIVER

JCT FREIGHT & RIVERSIDE, CT

Built 1925 Load: 99.9 t ADT: 7,100

RIDGE ROAD

Fair

Over: SUMNER BROOK

290 FT W OF MAIN ST EXT, CT

Built 1938 Load: 99.9 t ADT: 3,735

INTERSTATE-84

Fair

Over: ROARING BROOK

1.3 MILE EAST OF ROUTE 32, CT

Built 1940 Load: 99.9 t ADT: 54,200

I-84 RAMPS & LOCA

Fair

Over: MAD RIVER

0.1 MI WEST OF EXIT 23 EB, CT

Built 1980 Load: 99.9 t ADT: 105,300

RT8 & RMPS 139 140

Fair

Over: BEACON HILL BROOK

AT EXIT 25 RTE 8, CT

Built 1981 Load: 99.9 t ADT: 48,000

ROUTE 111

Fair

Over: PEQUONNOCK RIVER

150 FT NORTH OF ROUTE 25, CT

Built 1980 Load: 99.9 t ADT: 19,600

PROSPECT HILL ROAD

Fair

Over: MEADOW BROOK

295 FT S OF ROUTE 2, CT

Built 1965 Load: 99.9 t ADT: 416

DENNISON ROAD

Fair

Over: FALLS RIVER

0.2 MI N OF ROUTE 154, CT

Built 1964 Load: 99.9 t ADT: 1,314

CHAFFEEVILLE ROAD

Fair

Over: FENTON RIVER

440 SOUTH OF MULBERRY ST, CT

Built 1950 Load: 99.9 t ADT: 669

SUNNYSIDE STREET

Fair

Over: YANTIC RIVER

40 FT EAST OF FRANKLIN RD, CT

Built 1908 Load: 99.9 t ADT: 465

WEST HYERDALE DR

Fair

Over: MARSHEPAUG RIVER

WEST OF CANTERBURY CT, CT

Built 1970 Load: 99.9 t ADT: 627

REV MOODY OVERPASS

Fair

Over: CT SOUTHERN RAILROAD

0.4 MI SOUTH OF WESTON ST, CT

Built 1983 Load: 99.9 t ADT: 7,344

ROUTE 9

Fair

Over: PIPER BROOK

.1 MI N OF NEW BRITAIN TL, CT

Built 1985 Load: 99.9 t ADT: 73,800

ROUTE 9 & BUSWAY

Fair

Over: BASS BROOK

.13 MI SOUTH OF ROUTE 175, CT

Built 1985 Load: 99.9 t ADT: 73,800

ROUTE 9 RAMP 058

Fair

Over: BASS BROOK

SB ON RAMP FROM ROUTE 175, CT

Built 1985 Load: 99.9 t ADT: 10,600

I-384 & HOV RAMPS

Fair

Over: I-84 TR 836

0.2 MI W OF MANCHESTER TL, CT

Built 1986 Load: 99.9 t ADT: 34,600

ROUTE 199

Fair

Over: BATTLE SWAMP BROOK

1.8 MILE WEST OF ROUTE 67, CT

Built 1989 Load: 99.9 t ADT: 2,000

UNQUOWA ROAD

Fair

Over: METRO NORTH RAILROAD

0.1 MI N OF US ROUTE 1, CT

Built 1989 Load: 99.9 t ADT: 5,900

ROUTE 9 AND RAMP

Fair

Over: SPRUCE BROOK

400 S OF RTE 372 O/PASS, CT

Built 1988 Load: 99.9 t ADT: 61,500

I-91 RAMPS F & H

Fair

Over: MEADOW BROOK

I-91 NORTH EXIT 34, CT

Built 1990 Load: 99.9 t ADT: 4,100

I-291 & KING ST.

Fair

Over: PODUNK RIVER

0.25 MILES WEST OF U.S. 5, CT

Built 1958 Load: 99.9 t ADT: 43,900

ROUTE 85

Fair

Over: JORDAN BROOK

0.7 MI S OF I-395, CT

Built 1991 Load: 99.9 t ADT: 12,400

WOODFIELD CROSSING

Fair

Over: BROOK

0.2 MI S OF FRANCE STREET, CT

Built 1980 Load: 99.9 t ADT: 1,362

ROUTE 9

Fair

Over: BASS BROOK

0.1 MI N OF ROUTE 175, CT

Built 1991 Load: 99.9 t ADT: 48,700

I-84 AMTRAK CTFA

Fair

Over: NO. BRANCH OF PARK RIVER

FARMINGTON AVE - JCT BOX, CT

Built 1964 Load: 99.9 t ADT: 129,200

NORTHWOODS ROAD

Fair

Over: EAST BRANCH SALMON BROOK

100 EAST OF RTE.189, CT

Built 1982 Load: 99.9 t ADT: 141

WISCONSIN AVENUE

Fair

Over: ELISHA BROOK

1.5 MILES NORTH OF SR 642, CT

Built 1975 Load: 99.9 t ADT: 1,800

INTERSTATE I-84

Fair

Over: HOP BROOK

0.07 MI WEST BRG# 01171, CT

Built 1964 Load: 99.9 t ADT: 73,700

LOHSE ROAD

Fair

Over: ROARING BROOK

0.1 MILE SOUTH OF RTE 320, CT

Built 1958 Load: 99.9 t ADT: 608

INTERSTATE 95

Fair

Over: EAST BRANCH WEST RIVER

900 FT SOUTH OF ROUTE 77, CT

Built 1958 Load: 99.9 t ADT: 56,800

INTERSTATE-395 RAM

Fair

Over: PERRY BROOK

42 FEET N OF BRIDGE 03472, CT

Built 1966 Load: 99.9 t ADT: 3,400

INTERSTATE-395

Fair

Over: CULVER BROOK

I-395 NEAR MP 45, CT

Built 1966 Load: 99.9 t ADT: 21,000

BROOK ROAD #2

Good

Over: MERRICK BROOK

0.4 MI N OF ROUTE 14, CT

Built 1970 Load: 0.0 t ADT: 945

I-91 TR 860

Good

Over: BRIARWOOD DRIVE

I-91 NB X35 RAMP TO I-291, CT

Built 1992 Load: 0.0 t ADT: 7,000

GLEN STREET

Good

Over: MATTABESSET RIVER

0.2 MI N OF ROUTE 71, CT

Built 1957 Load: 11.7 t ADT: 1,050

BEAVER MEADOW ROAD

Good

Over: BEAVER MEADOW BROOK

0.7 MI W OF ROUTE 9, CT

Built 2022 Load: 13.6 t ADT: 1,000

Showing 2,901-2,950 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.