US Bridges

Thorne Road over Rockledge Brook

Good

Hartford County, Connecticut · 200 East of Davenport · Structure no. 06997

Built
1965
60 years old
Condition
Good
inspected March 2024
Type
Culvert
Concrete
Length
24 ft
2 main spans
Daily traffic
210
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Thorne Road over Rockledge Brook is a concrete culvert carrying Thorne Road over Rockledge Brook in Hartford County, Connecticut. It was built in 1965, so it is 60 years old, older 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 210 vehicles a day, roughly 1% of them trucks, projected to reach 312 by 2044. The structure is 24 ft (7.4 m) long and 49 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesThorne Road
CrossesRockledge Brook
Location200 East of Davenport
RouteCity Street 0
Coordinates41.73011, -72.74653
Functional classUrban Local

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length24 ft (7.4 m)
Longest span11 ft (3.4 m)
Deck width49 ft (14.8 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic210 (2024)
Projected traffic312 by 2044
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 Thorne Road over Rockledge Brook built?

It was built in 1965, making it 60 years old in 2025.

What condition is Thorne Road over Rockledge 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 2024.

How much traffic does Thorne Road over Rockledge Brook carry?

About 210 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Thorne Road over Rockledge Brook?

The structure is 24 ft (7.4 m) long with a longest span of 11 ft (3.4 m) and a deck 49 ft wide.

Who owns Thorne Road over Rockledge Brook?

It is owned by the Town or Township Highway Agency.