US Bridges

RTE 27A over Sumpawams Creek

Fair

Suffolk County, New York · RTE 27A at Route 231 · Structure no. 000000001019470

Built
1967
58 years old
Condition
Fair
inspected May 2023
Type
Culvert
Concrete
Length
23 ft
2 main spans
Daily traffic
16,921
2018 count
Owner
State
State Highway Agency

About this bridge

RTE 27A over Sumpawams Creek is a concrete culvert carrying RTE 27A over Sumpawams Creek in Suffolk County, New York. It was built in 1967, so it is 58 years old, older than the New York average of 53 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 16,921 vehicles a day, roughly 3% of them trucks, projected to reach 20,555 by 2041. The structure is 23 ft (7 m) long and 338 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesRTE 27A
CrossesSumpawams Creek
LocationRTE 27A at Route 231
RouteState Highway 27A
CountySuffolk County
StateNew York
Coordinates40.69681, -73.31729
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.3 US tons
Inventory rating32.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 20
Structure length23 ft (7 m)
Longest span10 ft (3 m)
Deck width338 ft (103 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,921 (2018)
Projected traffic20,555 by 2041
Trucks3%
Lanes on structure4
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

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$4.8 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 27A over Sumpawams Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is RTE 27A over Sumpawams Creek 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 May 2023.

How much traffic does RTE 27A over Sumpawams Creek carry?

About 16,921 vehicles per day (2018 count), of which roughly 3% are trucks.

How long is RTE 27A over Sumpawams Creek?

The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m) and a deck 338 ft wide.

Who owns RTE 27A over Sumpawams Creek?

It is owned by the State Highway Agency.