US Bridges

Route 8 Northbound over Naugatuck River & R.R.

Fair

Litchfield County, Connecticut · .1 MI North Route 109 · Structure no. 03350

Built
1966
59 years old, rebuilt 1994
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
557 ft
5 main spans
Daily traffic
14,000
2021 count
Owner
State
State Highway Agency

About this bridge

Route 8 Northbound over Naugatuck River & R.R. is a steel stringer/multi-beam or girder carrying Route 8 Northbound over Naugatuck River & R.R. in Litchfield County, Connecticut. It was built in 1966 and reconstructed in 1994, so it is 59 years old, older than the Connecticut average of 56.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 14,000 vehicles a day, roughly 6% of them trucks, projected to reach 20,803 by 2041. The structure is 557 ft (169.7 m) long and 53 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesRoute 8 Northbound
CrossesNaugatuck River & R.R.
Location.1 MI North Route 109
RouteState Highway 8
Coordinates41.66092, -73.07771
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45 US tons
Inventory rating34.6 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length557 ft (169.7 m)
Longest span116 ft (35.4 m)
Deck width53 ft (16.3 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,000 (2021)
Projected traffic20,803 by 2041
Trucks6%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad and waterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Route 8 Northbound over Naugatuck River & R.R. built?

It was built in 1966, making it 59 years old in 2025. It was reconstructed in 1994.

What condition is Route 8 Northbound over Naugatuck River & R.R. in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2024.

How much traffic does Route 8 Northbound over Naugatuck River & R.R. carry?

About 14,000 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is Route 8 Northbound over Naugatuck River & R.R.?

The structure is 557 ft (169.7 m) long with a longest span of 116 ft (35.4 m) and a deck 53 ft wide.

Who owns Route 8 Northbound over Naugatuck River & R.R.?

It is owned by the State Highway Agency.