US Bridges

Old White Lk Trpk over W Br Mongaup Rvr

FairPosted for load

Sullivan County, New York · 2.5 MI South of Swan Lake · Structure no. 000000002228810

Built
1977
48 years old
Condition
Fair
inspected March 2024
Type
Slab
Wood or Timber
Length
32 ft
1 main span
Daily traffic
335
2017 count
Owner
County
County Highway Agency

About this bridge

Old White Lk Trpk over W Br Mongaup Rvr is a wood or timber slab carrying Old White Lk Trpk over W Br Mongaup Rvr in Sullivan County, New York. It was built in 1977, so it is 48 years old, younger than the New York average of 53 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. Its operating status is: posted for load restriction.

It carries about 335 vehicles a day, roughly 14% of them trucks, projected to reach 469 by 2037. The structure is 32 ft (9.8 m) long and 26 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

CarriesOld White Lk Trpk
CrossesW Br Mongaup Rvr
Location2.5 MI South of Swan Lake
Coordinates41.7151, -74.79143
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating33 US tons
Inventory rating21.1 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckNot applicable
Main spans1
Design loadOther
Structure length32 ft (9.8 m)
Longest span31 ft (9.4 m)
Deck width26 ft (7.9 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic335 (2017)
Projected traffic469 by 2037
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 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$566,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Old White Lk Trpk over W Br Mongaup Rvr built?

It was built in 1977, making it 48 years old in 2025.

What condition is Old White Lk Trpk over W Br Mongaup Rvr 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 March 2024.

How much traffic does Old White Lk Trpk over W Br Mongaup Rvr carry?

About 335 vehicles per day (2017 count), of which roughly 14% are trucks.

How long is Old White Lk Trpk over W Br Mongaup Rvr?

The structure is 32 ft (9.8 m) long with a longest span of 31 ft (9.4 m) and a deck 26 ft wide.

Who owns Old White Lk Trpk over W Br Mongaup Rvr?

It is owned by the County Highway Agency.