US Bridges

Mcewen Road over Allen Brook

PoorPosted for load

St. Lawrence County, New York · 2 MI SW of Lawrenceville · Structure no. 000000003221340

Built
1984
41 years old
Condition
Poor
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
32 ft
1 main span
Daily traffic
125
2018 count
Owner
County
County Highway Agency

About this bridge

Mcewen Road over Allen Brook is a steel stringer/multi-beam or girder carrying Mcewen Road over Allen Brook in St. Lawrence County, New York. It was built in 1984, so it is 41 years old, younger than the New York average of 53 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 125 vehicles a day, roughly 10% of them trucks, projected to reach 175 by 2038. The structure is 32 ft (9.8 m) long and 27 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

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CarriesMcewen Road
CrossesAllen Brook
Location2 MI SW of Lawrenceville
CountySt. Lawrence County
StateNew York
Coordinates44.76606, -74.68979
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating25 US tons
Inventory rating15 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span29 ft (8.8 m)
Deck width27 ft (8.2 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic125 (2018)
Projected traffic175 by 2038
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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$448,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mcewen Road over Allen Brook built?

It was built in 1984, making it 41 years old in 2025.

What condition is Mcewen Road over Allen Brook in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2024.

How much traffic does Mcewen Road over Allen Brook carry?

About 125 vehicles per day (2018 count), of which roughly 10% are trucks.

How long is Mcewen Road over Allen Brook?

The structure is 32 ft (9.8 m) long with a longest span of 29 ft (8.8 m) and a deck 27 ft wide.

Who owns Mcewen Road over Allen Brook?

It is owned by the County Highway Agency.