US Bridges

County Road 50 over Carlls River

Good

Suffolk County, New York · JCT S H 109 & S H 27 · Structure no. 000000003369920

Built
2002
23 years old
Condition
Good
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
24 ft
1 main span
Daily traffic
11,884
2020 count
Owner
County
County Highway Agency

About this bridge

County Road 50 over Carlls River is a prestressed concrete box beam or girders - multiple carrying County Road 50 over Carlls River in Suffolk County, New York. It was built in 2002, so it is 23 years old, younger than the New York average of 53 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 11,884 vehicles a day, roughly 3% of them trucks, projected to reach 14,704 by 2041. The structure is 24 ft (7.3 m) long and 49 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesCounty Road 50
CrossesCarlls River
LocationJCT S H 109 & S H 27
RouteCounty Highway 0
Coordinates40.70207, -73.32825
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating110.1 US tons
Inventory rating110.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length24 ft (7.3 m)
Longest span22 ft (6.7 m)
Deck width49 ft (14.9 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,884 (2020)
Projected traffic14,704 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$2.2 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 50 over Carlls River built?

It was built in 2002, making it 23 years old in 2025.

What condition is County Road 50 over Carlls River 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 May 2024.

How much traffic does County Road 50 over Carlls River carry?

About 11,884 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is County Road 50 over Carlls River?

The structure is 24 ft (7.3 m) long with a longest span of 22 ft (6.7 m) and a deck 49 ft wide.

Who owns County Road 50 over Carlls River?

It is owned by the County Highway Agency.