US Bridges

Combs Road over Miry Run

Good

Mercer County, New Jersey · 1.0 MI West of Co. 535 · Structure no. 1109411

Built
1988
37 years old
Condition
Good
inspected February 2023
Type
Culvert
Concrete
Length
64 ft
3 main spans
Daily traffic
914
2023 count
Owner
County
County Highway Agency

About this bridge

Combs Road over Miry Run is a concrete culvert carrying Combs Road over Miry Run in Mercer County, New Jersey. It was built in 1988, so it is 37 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 914 vehicles a day, roughly 3% of them trucks, projected to reach 1,093 by 2043. The structure is 64 ft (19.5 m) long and 80 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCombs Road
CrossesMiry Run
Location1.0 MI West of Co. 535
RouteCity Street 0
Coordinates40.24001, -74.63959
Functional classUrban 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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.9 US tons
Inventory rating54 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length64 ft (19.5 m)
Longest span20 ft (6.1 m)
Deck width80 ft (24.4 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic914 (2023)
Projected traffic1,093 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Combs Road over Miry Run built?

It was built in 1988, making it 37 years old in 2025.

What condition is Combs Road over Miry Run 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 February 2023.

How much traffic does Combs Road over Miry Run carry?

About 914 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Combs Road over Miry Run?

The structure is 64 ft (19.5 m) long with a longest span of 20 ft (6.1 m) and a deck 80 ft wide.

Who owns Combs Road over Miry Run?

It is owned by the County Highway Agency.