US Bridges

Gibson Hill Road over Quanduck Brook

Good

Windham County, Connecticut · 100 South of River Road · Structure no. 04787

Built
1950
75 years old, rebuilt 2010
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
46 ft
1 main span
Daily traffic
528
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Gibson Hill Road over Quanduck Brook is a steel stringer/multi-beam or girder carrying Gibson Hill Road over Quanduck Brook in Windham County, Connecticut. It was built in 1950 and reconstructed in 2010, so it is 75 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 528 vehicles a day, roughly 7% of them trucks, projected to reach 785 by 2044. The structure is 46 ft (14 m) long and 25 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesGibson Hill Road
CrossesQuanduck Brook
Location100 South of River Road
RouteCity Street 0
Coordinates41.73048, -71.80267
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating38.6 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length46 ft (14 m)
Longest span44 ft (13.4 m)
Deck width25 ft (7.5 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic528 (2024)
Projected traffic785 by 2044
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Gibson Hill Road over Quanduck Brook built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 2010.

What condition is Gibson Hill Road over Quanduck 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 June 2024.

How much traffic does Gibson Hill Road over Quanduck Brook carry?

About 528 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is Gibson Hill Road over Quanduck Brook?

The structure is 46 ft (14 m) long with a longest span of 44 ft (13.4 m) and a deck 25 ft wide.

Who owns Gibson Hill Road over Quanduck Brook?

It is owned by the Town or Township Highway Agency.