US Bridges

US Route 1 over Neck River

Fair

New Haven County, Connecticut · 1.6 MI S of Route 79 · Structure no. 00346

Built
1914
111 years old
Condition
Fair
inspected April 2024
Type
Arch - Deck
Masonry
Length
20 ft
1 main span
Daily traffic
7,500
2022 count
Owner
State
State Highway Agency

About this bridge

US Route 1 over Neck River is a masonry arch - deck carrying US Route 1 over Neck River in New Haven County, Connecticut. It was built in 1914, so it is 111 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 7,500 vehicles a day, roughly 4% of them trucks, projected to reach 11,144 by 2042. The structure is 20 ft (6.1 m) long and 38 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesUS Route 1
CrossesNeck River
Location1.6 MI S of Route 79
RouteU.S. Route 1
CountyNew Haven County
StateConnecticut
Coordinates41.27836, -72.62739
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
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating47 US tons
Inventory rating36 US tons

Structure

Structure typeArch - Deck
MaterialMasonry
DeckNot applicable
Main spans1
Design loadUnknown
Structure length20 ft (6.1 m)
Longest span20 ft (6.1 m)
Deck width38 ft (11.7 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,500 (2022)
Projected traffic11,144 by 2042
Trucks4%
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

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US Route 1 over Neck River built?

It was built in 1914, making it 111 years old in 2025.

What condition is US Route 1 over Neck River 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 April 2024.

How much traffic does US Route 1 over Neck River carry?

About 7,500 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is US Route 1 over Neck River?

The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m) and a deck 38 ft wide.

Who owns US Route 1 over Neck River?

It is owned by the State Highway Agency.