US Bridges

County Road 174 over East Mongaup Rvr

Good

Sullivan County, New York · .6 MI SW of Harris · Structure no. 000000003356240

Built
1992
33 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
98 ft
1 main span
Daily traffic
2,690
2018 count
Owner
County
County Highway Agency

About this bridge

County Road 174 over East Mongaup Rvr is a steel stringer/multi-beam or girder carrying County Road 174 over East Mongaup Rvr in Sullivan County, New York. It was built in 1992, so it is 33 years old, younger than the New York average of 53 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 2,690 vehicles a day, roughly 6% of them trucks, projected to reach 3,267 by 2041. The structure is 98 ft (29.9 m) long and 36 ft wide. If it were closed, the detour would be 7.5 mi (12 km).

Location

Open in Google Maps
CarriesCounty Road 174
CrossesEast Mongaup Rvr
Location.6 MI SW of Harris
RouteCounty Highway 0
CountySullivan County
StateNew York
Coordinates41.70658, -74.73196
Functional classUrban Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length98 ft (29.9 m)
Longest span92 ft (28 m)
Deck width36 ft (11 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,690 (2018)
Projected traffic3,267 by 2041
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed7.5 mi (12 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 with deck rehabilitation or replacement
Estimated improvement cost$1.9 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 174 over East Mongaup Rvr built?

It was built in 1992, making it 33 years old in 2025.

What condition is County Road 174 over East Mongaup Rvr 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 November 2023.

How much traffic does County Road 174 over East Mongaup Rvr carry?

About 2,690 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is County Road 174 over East Mongaup Rvr?

The structure is 98 ft (29.9 m) long with a longest span of 92 ft (28 m) and a deck 36 ft wide.

Who owns County Road 174 over East Mongaup Rvr?

It is owned by the County Highway Agency.