US Bridges

Cobble Road over Hollenbeck River

Poor

Litchfield County, Connecticut · East of RTE 63 Int · Structure no. 05193

Built
1956
69 years old
Condition
Poor
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
115 ft
3 main spans
Daily traffic
378
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Cobble Road over Hollenbeck River is a steel stringer/multi-beam or girder carrying Cobble Road over Hollenbeck River in Litchfield County, Connecticut. It was built in 1956, 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 378 vehicles a day, roughly 7% of them trucks, projected to reach 562 by 2043. The structure is 115 ft (35.1 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesCobble Road
CrossesHollenbeck River
LocationEast of RTE 63 Int
RouteCity Street 0
Coordinates41.9431, -73.30589
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73 US tons
Inventory rating44 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length115 ft (35.1 m)
Longest span36 ft (11.1 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic378 (2023)
Projected traffic562 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Cobble Road over Hollenbeck River built?

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

What condition is Cobble Road over Hollenbeck River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2023.

How much traffic does Cobble Road over Hollenbeck River carry?

About 378 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Cobble Road over Hollenbeck River?

The structure is 115 ft (35.1 m) long with a longest span of 36 ft (11.1 m) and a deck 28 ft wide.

Who owns Cobble Road over Hollenbeck River?

It is owned by the Town or Township Highway Agency.