US Bridges

Great Hill Road over Branch Brook

Fair

New Haven County, Connecticut · 1.5 MI West of Route 77 · Structure no. 06520

Built
1994
31 years old
Condition
Fair
inspected November 2023
Type
Arch - Deck
Concrete
Length
20 ft
1 main span
Daily traffic
608
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Great Hill Road over Branch Brook is a concrete arch - deck carrying Great Hill Road over Branch Brook in New Haven 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 5 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 608 vehicles a day, roughly 1% of them trucks, projected to reach 903 by 2043. The structure is 20 ft (6.1 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesGreat Hill Road
CrossesBranch Brook
Location1.5 MI West of Route 77
RouteCity Street 0
CountyNew Haven County
StateConnecticut
Coordinates41.39584, -72.72138
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
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating47 US tons
Inventory rating36 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length20 ft (6.1 m)
Longest span20 ft (6.1 m)
Deck width32 ft (9.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic608 (2023)
Projected traffic903 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 Great Hill Road over Branch Brook built?

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

What condition is Great Hill Road over Branch 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 November 2023.

How much traffic does Great Hill Road over Branch Brook carry?

About 608 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Great Hill Road over Branch Brook?

The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m) and a deck 32 ft wide.

Who owns Great Hill Road over Branch Brook?

It is owned by the Town or Township Highway Agency.