US Bridges

CO Rt 521 over Beaver Brook

Good

Warren County, New Jersey · 0.23 MI North of I80 · Structure no. 2101105

Built
1970
55 years old
Condition
Good
inspected March 2023
Type
Culvert
Concrete
Length
40 ft
2 main spans
Daily traffic
4,024
2023 count
Owner
County
County Highway Agency

About this bridge

CO Rt 521 over Beaver Brook is a concrete culvert carrying CO Rt 521 over Beaver Brook in Warren County, New Jersey. It was built in 1970, so it is 55 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 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 4,024 vehicles a day, roughly 3% of them trucks, projected to reach 4,909 by 2043. The structure is 40 ft (12.2 m) long. If it were closed, the detour would be 5 mi (8 km).

CarriesCO Rt 521
CrossesBeaver Brook
Location0.23 MI North of I80
RouteCounty Highway 521
Coordinates40.92776, -74.9595
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78 US tons
Inventory rating47 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span18 ft (5.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,024 (2023)
Projected traffic4,909 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was CO Rt 521 over Beaver Brook built?

It was built in 1970, making it 55 years old in 2025.

What condition is CO Rt 521 over Beaver Brook 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 March 2023.

How much traffic does CO Rt 521 over Beaver Brook carry?

About 4,024 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is CO Rt 521 over Beaver Brook?

The structure is 40 ft (12.2 m) long with a longest span of 18 ft (5.5 m).

Who owns CO Rt 521 over Beaver Brook?

It is owned by the County Highway Agency.