US Bridges

SR 668 - Butts Bri over Quinebaug River

Fair

Windham County, Connecticut · 0.4 MI from Route 169 · Structure no. 01649

Built
1937
88 years old, rebuilt 2009
Condition
Fair
inspected December 2024
Type
Truss - Thru
Steel
Length
234 ft
1 main span
Daily traffic
2,200
2022 count
Owner
State
State Highway Agency

About this bridge

SR 668 - Butts Bri over Quinebaug River is a steel truss - thru carrying SR 668 - Butts Bri over Quinebaug River in Windham County, Connecticut. It was built in 1937 and reconstructed in 2009, so it is 88 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 2,200 vehicles a day, roughly 6% of them trucks, projected to reach 3,269 by 2042. The structure is 234 ft (71.3 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSR 668 - Butts Bri
CrossesQuinebaug River
Location0.4 MI from Route 169
RouteState Highway 668
CountyWindham County
StateConnecticut
Coordinates41.65138, -71.97076
Functional classRural Major Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating72.6 US tons
Inventory rating43.5 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length234 ft (71.3 m)
Longest span226 ft (68.9 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deck15 ft (4.6 m)

Traffic and service

Average daily traffic2,200 (2022)
Projected traffic3,269 by 2042
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 668 - Butts Bri over Quinebaug River built?

It was built in 1937, making it 88 years old in 2025. It was reconstructed in 2009.

What condition is SR 668 - Butts Bri over Quinebaug River 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 December 2024.

How much traffic does SR 668 - Butts Bri over Quinebaug River carry?

About 2,200 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is SR 668 - Butts Bri over Quinebaug River?

The structure is 234 ft (71.3 m) long with a longest span of 226 ft (68.9 m) and a deck 31 ft wide.

Who owns SR 668 - Butts Bri over Quinebaug River?

It is owned by the State Highway Agency.