US Bridges

Snowden Lane over Heathcote Brook

Fair

Mercer County, New Jersey · 0.1 Mile North of Rt 27 · Structure no. 1103643

Built
1979
46 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete
Length
20 ft
1 main span
Daily traffic
1,485
2023 count
Owner
County
County Highway Agency

About this bridge

Snowden Lane over Heathcote Brook is a concrete culvert carrying Snowden Lane over Heathcote Brook in Mercer County, New Jersey. It was built in 1979, so it is 46 years old, younger than the New Jersey average of 58.5 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 1,485 vehicles a day, roughly 4% of them trucks, projected to reach 1,810 by 2043. The structure is 20 ft (6.1 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSnowden Lane
CrossesHeathcote Brook
Location0.1 Mile North of Rt 27
RouteCity Street 0
CountyMercer County
StateNew Jersey
Coordinates40.35814, -74.64075
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.1 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length20 ft (6.1 m)
Longest span20 ft (6.1 m)
Deck width40 ft (12.2 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,485 (2023)
Projected traffic1,810 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Snowden Lane over Heathcote Brook built?

It was built in 1979, making it 46 years old in 2025.

What condition is Snowden Lane over Heathcote 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 March 2023.

How much traffic does Snowden Lane over Heathcote Brook carry?

About 1,485 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Snowden Lane over Heathcote Brook?

The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m) and a deck 40 ft wide.

Who owns Snowden Lane over Heathcote Brook?

It is owned by the County Highway Agency.