How many bridges are in Connecticut?

Connecticut has 4,365 public highway bridges tracked in the FHWA National Bridge Inventory. View detailed condition data for each bridge on PlainBridges.

What percentage of bridges in Connecticut are in Poor condition?

4.7% of bridge records in Connecticut are in Poor condition, meaning the lowest applicable major-component rating is 4 or below, compared with 7.5% across state inventories.

State profile · Below median Poor share

Connecticut bridge safety

Name: Connecticut public highway bridge inventory (FHWA NBI)
Creator: PlainBridges
License: https://creativecommons.org/publicdomain/zero/1.0/

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.

Compiled by PlainBridges

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%.

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.

Concrete 1,096 bridges (25%) Prestressed concrete 926 bridges (21%) Steel 2,242 bridges (51%) Wood or timber 46 bridges (1%) Other 55 bridges (1%)

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.

State agency 2,850 bridges (65%) Local agency 1,355 bridges (31%) Federal agency 9 bridges (0%) Other 151 bridges (3%)

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.

Pre-1950 823 bridges (19%) 1950–1979 2,099 bridges (48%) 1980–1999 896 bridges (21%) 2000+ 547 bridges (13%)

Condition Distribution

Bridge inventory deck-condition mix - Connecticut (FHWA NBI)

Counties (8)

861 914 267 893 442 471 309 208

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.

Maryland

4.56% top marginal rate

Structure: Progressive
Burden @ $100K: $5,484

Oregon

4.61% top marginal rate

Structure: Progressive
Burden @ $100K: $8,305

Selected

Connecticut

4.72% top marginal rate

Structure: Progressive
Burden @ $100K: $4,365

Ohio

4.74% top marginal rate

Structure: Progressive
Burden @ $100K: $26,729

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.

Connecticut vs national bridge condition

Material families in Connecticut

Who maintains Connecticut’s inventory

When Connecticut’s bridges were built

Condition Distribution

Counties (8)

Bridges Needing Most Attention in Connecticut

FALLS ROAD

SHERMAN STREET

ROUTE 191

RIVER BANK ROAD

TRACY ROAD #1

ROUTE 136

All Bridges in Connecticut

EAST PUTNAM ROAD

BEN MERRILL ROAD

OLD COLCHESTER RD

SPICER ROAD

BASSETTS BRIDGE RD

COLONY ROAD

OLD GOSHEN ROAD

SMITH ROAD

BRAEBURN ROAD

ROUTE 162

MOUNTAIN ROAD

WINWOOD CIRCLE

MAIN STREET EXT.

GERBER DRIVE

I-95 N ON RAMP 316

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