US Bridges

RTE 97 over Mongaup River

Fair

Orange County, New York · JCT SH 97 & Mongaup River · Structure no. 000000001035340

Built
1934
91 years old, rebuilt 2000
Condition
Fair
inspected July 2024
Type
Truss - Deck
Steel
Length
224 ft
1 main span
Daily traffic
3,591
2020 count
Owner
State
State Highway Agency

About this bridge

RTE 97 over Mongaup River is a steel truss - deck carrying RTE 97 over Mongaup River in Orange County, New York. It was built in 1934 and reconstructed in 2000, so it is 91 years old, older 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 5 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 3,591 vehicles a day, roughly 5% of them trucks, projected to reach 3,746 by 2041. The structure is 224 ft (68.3 m) long and 32 ft wide. If it were closed, the detour would be 23.6 mi (38 km).

Location

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CarriesRTE 97
CrossesMongaup River
LocationJCT SH 97 & Mongaup River
RouteState Highway 97
CountyOrange County
StateNew York
Coordinates41.42675, -74.75593
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeTruss - Deck
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadH 20
Structure length224 ft (68.3 m)
Longest span140 ft (42.6 m)
Deck width32 ft (9.7 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,591 (2020)
Projected traffic3,746 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed23.6 mi (38 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$10.7 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 97 over Mongaup River built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 2000.

What condition is RTE 97 over Mongaup River 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 July 2024.

How much traffic does RTE 97 over Mongaup River carry?

About 3,591 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is RTE 97 over Mongaup River?

The structure is 224 ft (68.3 m) long with a longest span of 140 ft (42.6 m) and a deck 32 ft wide.

Who owns RTE 97 over Mongaup River?

It is owned by the State Highway Agency.