US Bridges

West Mountain Road over Sprain Brook

Fair

Litchfield County, Connecticut · Off Nettletown Hollow RD · Structure no. 06286

Built
1994
31 years old
Condition
Fair
inspected May 2023
Type
Slab
Wood or Timber
Length
28 ft
1 main span
Daily traffic
20
2017 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

West Mountain Road over Sprain Brook is a wood or timber slab carrying West Mountain Road over Sprain Brook in Litchfield County, Connecticut. It was built in 1994, so it is 31 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 6 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 20 vehicles a day, roughly 2% of them trucks, projected to reach 30 by 2037. The structure is 28 ft (8.5 m) long and 14 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesWest Mountain Road
CrossesSprain Brook
LocationOff Nettletown Hollow RD
RouteCity Street 0
CountyLitchfield County
StateConnecticut
Coordinates41.61134, -73.26906
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.4 US tons
Inventory rating24.3 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span24 ft (7.3 m)
Deck width14 ft (4.3 m)
Roadway width12 ft (3.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2017)
Projected traffic30 by 2037
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 West Mountain Road over Sprain Brook built?

It was built in 1994, making it 31 years old in 2025.

What condition is West Mountain Road over Sprain 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 May 2023.

How much traffic does West Mountain Road over Sprain Brook carry?

About 20 vehicles per day (2017 count), of which roughly 2% are trucks.

How long is West Mountain Road over Sprain Brook?

The structure is 28 ft (8.5 m) long with a longest span of 24 ft (7.3 m) and a deck 14 ft wide.

Who owns West Mountain Road over Sprain Brook?

It is owned by the Town or Township Highway Agency.