US Bridges

US Route 6 over Blackwell Brook

Good

Windham County, Connecticut · 1 Mile West of Route 169 · Structure no. 05394

Built
1985
40 years old, rebuilt 2006
Condition
Good
inspected March 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
55 ft
1 main span
Daily traffic
9,100
2016 count
Owner
State
State Highway Agency

About this bridge

US Route 6 over Blackwell Brook is a prestressed concrete box beam or girders - multiple carrying US Route 6 over Blackwell Brook in Windham County, Connecticut. It was built in 1985 and reconstructed in 2006, so it is 40 years old, younger than the Connecticut average of 56.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 9,100 vehicles a day, roughly 3% of them trucks, projected to reach 13,522 by 2036. The structure is 55 ft (16.8 m) long and 49 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

CarriesUS Route 6
CrossesBlackwell Brook
Location1 Mile West of Route 169
RouteU.S. Route 6
Coordinates41.78408, -71.96309
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2025
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating84.4 US tons
Inventory rating50.6 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length55 ft (16.8 m)
Longest span53 ft (16.2 m)
Deck width49 ft (14.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,100 (2016)
Projected traffic13,522 by 2036
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.1 mi (34 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 US Route 6 over Blackwell Brook built?

It was built in 1985, making it 40 years old in 2025. It was reconstructed in 2006.

What condition is US Route 6 over Blackwell Brook in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2025.

How much traffic does US Route 6 over Blackwell Brook carry?

About 9,100 vehicles per day (2016 count), of which roughly 3% are trucks.

How long is US Route 6 over Blackwell Brook?

The structure is 55 ft (16.8 m) long with a longest span of 53 ft (16.2 m) and a deck 49 ft wide.

Who owns US Route 6 over Blackwell Brook?

It is owned by the State Highway Agency.