US Bridges

RTE 28A over Ashokan Spillway

Fair

Ulster County, New York · .4MI N RTE28A at Spillway · Structure no. 000000002020440

Built
1912
113 years old, rebuilt 2010
Condition
Fair
inspected June 2023
Type
Arch - Deck
Concrete
Length
276 ft
1 main span
Daily traffic
450
2021 count
Owner
Local
Other Local Agency

About this bridge

RTE 28A over Ashokan Spillway is a concrete arch - deck carrying RTE 28A over Ashokan Spillway in Ulster County, New York. It was built in 1912 and reconstructed in 2010, so it is 113 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 6 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 450 vehicles a day, roughly 5% of them trucks, projected to reach 630 by 2041. The structure is 276 ft (84.1 m) long and 30 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesRTE 28A
CrossesAshokan Spillway
Location.4MI N RTE28A at Spillway
CountyUlster County
StateNew York
Coordinates41.94345, -74.16968
Functional classRural Minor 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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1 (+8 approach)
Design loadHS 20
Structure length276 ft (84.1 m)
Longest span175 ft (53.3 m)
Deck width30 ft (9.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic450 (2021)
Projected traffic630 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther Local Agency
Maintained byOther Local Agency
Historic statusEligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$11 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 28A over Ashokan Spillway built?

It was built in 1912, making it 113 years old in 2025. It was reconstructed in 2010.

What condition is RTE 28A over Ashokan Spillway 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 June 2023.

How much traffic does RTE 28A over Ashokan Spillway carry?

About 450 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is RTE 28A over Ashokan Spillway?

The structure is 276 ft (84.1 m) long with a longest span of 175 ft (53.3 m) and a deck 30 ft wide.

Who owns RTE 28A over Ashokan Spillway?

It is owned by the Other Local Agency.