US Bridges

Canaan Mountain RD over Wangum Lake Brook

FairPosted for load

Litchfield County, Connecticut · North of under Mtn RD · Structure no. 05659

Built
1988
37 years old
Condition
Fair
inspected March 2023
Type
Slab
Wood or Timber
Length
31 ft
1 main span
Daily traffic
125
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Canaan Mountain RD over Wangum Lake Brook is a wood or timber slab carrying Canaan Mountain RD over Wangum Lake Brook in Litchfield County, Connecticut. It was built in 1988, so it is 37 years old, younger 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. Its operating status is: posted for load restriction.

It carries about 125 vehicles a day, roughly 2% of them trucks, projected to reach 186 by 2043. The structure is 31 ft (9.4 m) long and 21 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

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CarriesCanaan Mountain RD
CrossesWangum Lake Brook
LocationNorth of under Mtn RD
RouteCity Street 0
CountyLitchfield County
StateConnecticut
Coordinates41.95298, -73.27921
Functional classRural Local

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.
Superstructure7 GoodSome minor problems.
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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating71.2 US tons
Inventory rating49.4 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span29 ft (8.8 m)
Deck width21 ft (6.4 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic125 (2023)
Projected traffic186 by 2043
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 Canaan Mountain RD over Wangum Lake Brook built?

It was built in 1988, making it 37 years old in 2025.

What condition is Canaan Mountain RD over Wangum Lake Brook 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 March 2023.

How much traffic does Canaan Mountain RD over Wangum Lake Brook carry?

About 125 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Canaan Mountain RD over Wangum Lake Brook?

The structure is 31 ft (9.4 m) long with a longest span of 29 ft (8.8 m) and a deck 21 ft wide.

Who owns Canaan Mountain RD over Wangum Lake Brook?

It is owned by the Town or Township Highway Agency.