US Bridges

Milltown Road over Sawmill Brook

Fair

Middlesex County, New Jersey · 1.08 Miles West of RT527 · Structure no. 123B231

Built
1997
28 years old
Condition
Fair
inspected April 2023
Type
Culvert
Steel
Length
25 ft
2 main spans
Daily traffic
16,165
2023 count
Owner
County
County Highway Agency

About this bridge

Milltown Road over Sawmill Brook is a steel culvert carrying Milltown Road over Sawmill Brook in Middlesex County, New Jersey. It was built in 1997, so it is 28 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 16,165 vehicles a day, roughly 4% of them trucks, projected to reach 19,725 by 2043. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesMilltown Road
CrossesSawmill Brook
Location1.08 Miles West of RT527
RouteCounty Highway 606
CountyMiddlesex County
StateNew Jersey
Coordinates40.44072, -74.40932
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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadUnknown
Structure length25 ft (7.6 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,165 (2023)
Projected traffic19,725 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 Milltown Road over Sawmill Brook built?

It was built in 1997, making it 28 years old in 2025.

What condition is Milltown Road over Sawmill 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 April 2023.

How much traffic does Milltown Road over Sawmill Brook carry?

About 16,165 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Milltown Road over Sawmill Brook?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m).

Who owns Milltown Road over Sawmill Brook?

It is owned by the County Highway Agency.