US Bridges

Route 101 over Quinebaug River

Fair

Windham County, Connecticut · At Killingly Town Line · Structure no. 01297

Built
1957
68 years old, rebuilt 1989
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
155 ft
2 main spans
Daily traffic
9,100
2016 count
Owner
State
State Highway Agency

About this bridge

Route 101 over Quinebaug River is a steel stringer/multi-beam or girder carrying Route 101 over Quinebaug River in Windham County, Connecticut. It was built in 1957 and reconstructed in 1989, so it is 68 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 9,100 vehicles a day, roughly 4% of them trucks, projected to reach 13,522 by 2036. The structure is 155 ft (47.2 m) long and 34 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesRoute 101
CrossesQuinebaug River
LocationAt Killingly Town Line
RouteState Highway 101
CountyWindham County
StateConnecticut
Coordinates41.84929, -71.92109
Functional classRural Minor Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81.8 US tons
Inventory rating63.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length155 ft (47.2 m)
Longest span74 ft (22.6 m)
Deck width34 ft (10.4 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,100 (2016)
Projected traffic13,522 by 2036
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 km)
TollOn a free road
National Highway SystemNo

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 101 over Quinebaug River built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1989.

What condition is Route 101 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 May 2023.

How much traffic does Route 101 over Quinebaug River carry?

About 9,100 vehicles per day (2016 count), of which roughly 4% are trucks.

How long is Route 101 over Quinebaug River?

The structure is 155 ft (47.2 m) long with a longest span of 74 ft (22.6 m) and a deck 34 ft wide.

Who owns Route 101 over Quinebaug River?

It is owned by the State Highway Agency.