US Bridges

Mount Hope Road over W Br Mongaup Rivr

Poor

Sullivan County, New York · At Swan Lake · Structure no. 000000002228800

Built
1939
86 years old, rebuilt 1991
Condition
Poor
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
31 ft
1 main span
Daily traffic
1,304
2016 count
Owner
County
County Highway Agency

About this bridge

Mount Hope Road over W Br Mongaup Rivr is a steel stringer/multi-beam or girder carrying Mount Hope Road over W Br Mongaup Rivr in Sullivan County, New York. It was built in 1939 and reconstructed in 1991, so it is 86 years old, older than the New York average of 53 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.

It carries about 1,304 vehicles a day, roughly 7% of them trucks, projected to reach 1,826 by 2036. The structure is 31 ft (9.4 m) long and 21 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesMount Hope Road
CrossesW Br Mongaup Rivr
LocationAt Swan Lake
Coordinates41.74901, -74.78407
Functional classRural Local

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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating12.9 US tons
Inventory rating9.6 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length31 ft (9.4 m)
Longest span26 ft (7.9 m)
Deck width21 ft (6.5 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,304 (2016)
Projected traffic1,826 by 2036
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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$351,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mount Hope Road over W Br Mongaup Rivr built?

It was built in 1939, making it 86 years old in 2025. It was reconstructed in 1991.

What condition is Mount Hope Road over W Br Mongaup Rivr 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 March 2023.

How much traffic does Mount Hope Road over W Br Mongaup Rivr carry?

About 1,304 vehicles per day (2016 count), of which roughly 7% are trucks.

How long is Mount Hope Road over W Br Mongaup Rivr?

The structure is 31 ft (9.4 m) long with a longest span of 26 ft (7.9 m) and a deck 21 ft wide.

Who owns Mount Hope Road over W Br Mongaup Rivr?

It is owned by the County Highway Agency.