US Bridges

Route 34 over Housatonic River

PoorPosted for load

Fairfield County, Connecticut · 1 Mile East of JCT Rt 111 · Structure no. 01843

Built
1919
106 years old, rebuilt 1979
Condition
Poor
inspected March 2024
Type
Tee Beam
Concrete
Length
983 ft
26 main spans
Daily traffic
8,800
2022 count
Owner
Private
Private (other than railroad)

About this bridge

Route 34 over Housatonic River is a concrete tee beam carrying Route 34 over Housatonic River in Fairfield County, Connecticut. It was built in 1919 and reconstructed in 1979, so it is 106 years old, older than the Connecticut average of 56.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 8,800 vehicles a day, roughly 6% of them trucks, projected to reach 13,076 by 2042. The structure is 983 ft (299.6 m) long and 28 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesRoute 34
CrossesHousatonic River
Location1 Mile East of JCT Rt 111
RouteState Highway 34
Coordinates41.38337, -73.17161
Functional classUrban Other Principal Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment2: Basically intolerable, requiring high priority of replacement
Operating rating19 US tons
Inventory rating14.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans26 (+7 approach)
Design loadHS 20
Structure length983 ft (299.6 m)
Longest span60 ft (18.3 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,800 (2022)
Projected traffic13,076 by 2042
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerPrivate (other than railroad)
Maintained byPrivate (other than railroad)
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$131.5 million (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Route 34 over Housatonic River built?

It was built in 1919, making it 106 years old in 2025. It was reconstructed in 1979.

What condition is Route 34 over Housatonic River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2024.

How much traffic does Route 34 over Housatonic River carry?

About 8,800 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is Route 34 over Housatonic River?

The structure is 983 ft (299.6 m) long with a longest span of 60 ft (18.3 m) and a deck 28 ft wide.

Who owns Route 34 over Housatonic River?

It is owned by the Private (other than railroad).