US Bridges

Route 188 over Hop Brook

Fair

New Haven County, Connecticut · 1.8 MI N of Route 64 · Structure no. 01506

Built
1904
121 years old, rebuilt 1944
Condition
Fair
inspected August 2024
Type
Arch - Deck
Concrete
Length
43 ft
1 main span
Daily traffic
2,600
2015 count
Owner
State
State Highway Agency

About this bridge

Route 188 over Hop Brook is a concrete arch - deck carrying Route 188 over Hop Brook in New Haven County, Connecticut. It was built in 1904 and reconstructed in 1944, so it is 121 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 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 2,600 vehicles a day, roughly 3% of them trucks, projected to reach 3,863 by 2035. The structure is 43 ft (13.1 m) long and 35 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesRoute 188
CrossesHop Brook
Location1.8 MI N of Route 64
RouteState Highway 188
CountyNew Haven County
StateConnecticut
Coordinates41.52742, -73.09747
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
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 adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47 US tons
Inventory rating36 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length43 ft (13.1 m)
Longest span40 ft (12.2 m)
Deck width35 ft (10.7 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,600 (2015)
Projected traffic3,863 by 2035
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 188 over Hop Brook built?

It was built in 1904, making it 121 years old in 2025. It was reconstructed in 1944.

What condition is Route 188 over Hop 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 August 2024.

How much traffic does Route 188 over Hop Brook carry?

About 2,600 vehicles per day (2015 count), of which roughly 3% are trucks.

How long is Route 188 over Hop Brook?

The structure is 43 ft (13.1 m) long with a longest span of 40 ft (12.2 m) and a deck 35 ft wide.

Who owns Route 188 over Hop Brook?

It is owned by the State Highway Agency.