US Bridges

Eagle Street over Naugatuck River

Poor

New Haven County, Connecticut · JCT of Eagle ST & SR 847 · Structure no. 05039

Built
1956
69 years old
Condition
Poor
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
178 ft
3 main spans
Daily traffic
3,067
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Eagle Street over Naugatuck River is a steel stringer/multi-beam or girder carrying Eagle Street over Naugatuck River in New Haven County, Connecticut. It was built in 1956, so it is 69 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.

It carries about 3,067 vehicles a day, roughly 4% of them trucks, projected to reach 4,557 by 2044. The structure is 178 ft (54.3 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesEagle Street
CrossesNaugatuck River
LocationJCT of Eagle ST & SR 847
RouteCity Street 0
Coordinates41.53632, -73.03647
Functional classUrban Local

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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating87 US tons
Inventory rating52.1 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length178 ft (54.3 m)
Longest span59 ft (18 m)
Deck width40 ft (12.2 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,067 (2024)
Projected traffic4,557 by 2044
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Eagle Street over Naugatuck River built?

It was built in 1956, making it 69 years old in 2025.

What condition is Eagle Street over Naugatuck 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 December 2024.

How much traffic does Eagle Street over Naugatuck River carry?

About 3,067 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is Eagle Street over Naugatuck River?

The structure is 178 ft (54.3 m) long with a longest span of 59 ft (18 m) and a deck 40 ft wide.

Who owns Eagle Street over Naugatuck River?

It is owned by the City or Municipal Highway Agency.