US Bridges

Whitenack Road over Mine Brook

Fair

Somerset County, New Jersey · 0.1 MI So Rt 202 · Structure no. 18F1204

Built
1906
119 years old, rebuilt 1990
Condition
Fair
inspected September 2023
Type
Slab
Wood or Timber
Length
30 ft
1 main span
Daily traffic
1,197
2023 count
Owner
County
County Highway Agency

About this bridge

Whitenack Road over Mine Brook is a wood or timber slab carrying Whitenack Road over Mine Brook in Somerset County, New Jersey. It was built in 1906 and reconstructed in 1990, so it is 119 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 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 1,197 vehicles a day, roughly 1% of them trucks, projected to reach 1,436 by 2043. The structure is 30 ft (9.1 m) long and 22 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesWhitenack Road
CrossesMine Brook
Location0.1 MI So Rt 202
RouteCity Street 0
CountySomerset County
StateNew Jersey
Coordinates40.69487, -74.60823
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating81 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20 + Mod
Structure length30 ft (9.1 m)
Longest span27 ft (8.2 m)
Deck width22 ft (6.8 m)
Roadway width21 ft (6.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,197 (2023)
Projected traffic1,436 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$526,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Whitenack Road over Mine Brook built?

It was built in 1906, making it 119 years old in 2025. It was reconstructed in 1990.

What condition is Whitenack Road over Mine 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 September 2023.

How much traffic does Whitenack Road over Mine Brook carry?

About 1,197 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Whitenack Road over Mine Brook?

The structure is 30 ft (9.1 m) long with a longest span of 27 ft (8.2 m) and a deck 22 ft wide.

Who owns Whitenack Road over Mine Brook?

It is owned by the County Highway Agency.