US Bridges

Newport Road over Spruce Run

PoorPosted for load

Hunterdon County, New Jersey · 0.06 Mi.No of Red Mill RD · Structure no. 1000088

Built
1900
125 years old
Condition
Poor
inspected April 2023
Type
Arch - Deck
Masonry
Length
21 ft
1 main span
Daily traffic
486
2023 count
Owner
County
County Highway Agency

About this bridge

Newport Road over Spruce Run is a masonry arch - deck carrying Newport Road over Spruce Run in Hunterdon County, New Jersey. It was built in 1900, so it is 125 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 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 486 vehicles a day, roughly 5% of them trucks, projected to reach 592 by 2043. The structure is 21 ft (6.4 m) long and 15 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesNewport Road
CrossesSpruce Run
Location0.06 Mi.No of Red Mill RD
RouteCity Street 0
CountyHunterdon County
StateNew Jersey
Coordinates40.72487, -74.90949
Functional classRural Minor Collector

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
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating45 US tons
Inventory rating27 US tons

Structure

Structure typeArch - Deck
MaterialMasonry
DeckNot applicable
Main spans1
Design loadUnknown
Structure length21 ft (6.4 m)
Longest span21 ft (6.4 m)
Deck width15 ft (4.5 m)
Roadway width12 ft (3.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic486 (2023)
Projected traffic592 by 2043
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$807,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Newport Road over Spruce Run built?

It was built in 1900, making it 125 years old in 2025.

What condition is Newport Road over Spruce Run 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 April 2023.

How much traffic does Newport Road over Spruce Run carry?

About 486 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Newport Road over Spruce Run?

The structure is 21 ft (6.4 m) long with a longest span of 21 ft (6.4 m) and a deck 15 ft wide.

Who owns Newport Road over Spruce Run?

It is owned by the County Highway Agency.