US Bridges

Vlietown Road over Cold Brook

Good

Hunterdon County, New Jersey · 0.7 Miles East Rt 517 · Structure no. 1000038

Built
1930
95 years old, rebuilt 2016
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
1 main span
Daily traffic
416
2023 count
Owner
County
County Highway Agency

About this bridge

Vlietown Road over Cold Brook is a steel stringer/multi-beam or girder carrying Vlietown Road over Cold Brook in Hunterdon County, New Jersey. It was built in 1930 and reconstructed in 2016, so it is 95 years old, older 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 416 vehicles a day, roughly 3% of them trucks, projected to reach 507 by 2043. The structure is 30 ft (9.1 m) long and 20 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesVlietown Road
CrossesCold Brook
Location0.7 Miles East Rt 517
RouteCity Street 0
CountyHunterdon County
StateNew Jersey
Coordinates40.67492, -74.73787
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating78 US tons
Inventory rating47 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span29 ft (8.8 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic416 (2023)
Projected traffic507 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 of existing bridge without deck rehabilitation
Estimated improvement cost$183,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Vlietown Road over Cold Brook built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 2016.

What condition is Vlietown Road over Cold 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 April 2023.

How much traffic does Vlietown Road over Cold Brook carry?

About 416 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Vlietown Road over Cold Brook?

The structure is 30 ft (9.1 m) long with a longest span of 29 ft (8.8 m) and a deck 20 ft wide.

Who owns Vlietown Road over Cold Brook?

It is owned by the County Highway Agency.