US Bridges

Route 47 over Sprain Brook

Fair

Litchfield County, Connecticut · 1.2 Mile S. of Roxbury Tl · Structure no. 01003

Built
1956
69 years old, rebuilt 1985
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
62 ft
1 main span
Daily traffic
2,300
2023 count
Owner
State
State Highway Agency

About this bridge

Route 47 over Sprain Brook is a steel stringer/multi-beam or girder carrying Route 47 over Sprain Brook in Litchfield County, Connecticut. It was built in 1956 and reconstructed in 1985, so it is 69 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 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 2,300 vehicles a day, roughly 5% of them trucks, projected to reach 3,418 by 2043. The structure is 62 ft (18.9 m) long and 46 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesRoute 47
CrossesSprain Brook
Location1.2 Mile S. of Roxbury Tl
RouteState Highway 47
Coordinates41.58601, -73.25209
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.1 US tons
Inventory rating42.1 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length62 ft (18.9 m)
Longest span54 ft (16.5 m)
Deck width46 ft (14 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,300 (2023)
Projected traffic3,418 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 47 over Sprain Brook built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1985.

What condition is Route 47 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 2024.

How much traffic does Route 47 over Sprain Brook carry?

About 2,300 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Route 47 over Sprain Brook?

The structure is 62 ft (18.9 m) long with a longest span of 54 ft (16.5 m) and a deck 46 ft wide.

Who owns Route 47 over Sprain Brook?

It is owned by the State Highway Agency.