US Bridges

Route 8 Southbound over Naugatuck River & RR

Fair

Litchfield County, Connecticut · 1.5 Mile South of RTE 118 · Structure no. 00609

Built
1960
65 years old, rebuilt 2009
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
623 ft
3 main spans
Daily traffic
11,900
2021 count
Owner
State
State Highway Agency

About this bridge

Route 8 Southbound over Naugatuck River & RR is a steel continuous stringer/multi-beam or girder carrying Route 8 Southbound over Naugatuck River & RR in Litchfield County, Connecticut. It was built in 1960 and reconstructed in 2009, so it is 65 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 5 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 11,900 vehicles a day, roughly 6% of them trucks, projected to reach 17,682 by 2041. The structure is 623 ft (189.9 m) long and 37 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesRoute 8 Southbound
CrossesNaugatuck River & RR
Location1.5 Mile South of RTE 118
RouteState Highway 8
Coordinates41.73873, -73.11115
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.1 US tons
Inventory rating39.6 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+4 approach)
Design loadHS 20
Structure length623 ft (189.9 m)
Longest span160 ft (48.8 m)
Deck width37 ft (11.2 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,900 (2021)
Projected traffic17,682 by 2041
Trucks6%
Lanes on structure2
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 Southbound over Naugatuck River & RR built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 2009.

What condition is Route 8 Southbound over Naugatuck River & RR 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 May 2024.

How much traffic does Route 8 Southbound over Naugatuck River & RR carry?

About 11,900 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is Route 8 Southbound over Naugatuck River & RR?

The structure is 623 ft (189.9 m) long with a longest span of 160 ft (48.8 m) and a deck 37 ft wide.

Who owns Route 8 Southbound over Naugatuck River & RR?

It is owned by the State Highway Agency.