US Bridges

Knox Avenue over Wilson Hollow Brk

Fair

Delaware County, New York · 0.2 MI N of JCT NY-30 & N · Structure no. 000000003352080

Built
1948
77 years old, rebuilt 2022
Condition
Fair
inspected November 2024
Type
Box Beam or Girders - Multiple
Concrete
Length
38 ft
1 main span
Daily traffic
1,482
2021 count
Owner
County
County Highway Agency

About this bridge

Knox Avenue over Wilson Hollow Brk is a concrete box beam or girders - multiple carrying Knox Avenue over Wilson Hollow Brk in Delaware County, New York. It was built in 1948 and reconstructed in 2022, so it is 77 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 1,482 vehicles a day, roughly 8% of them trucks, projected to reach 2,075 by 2041. The structure is 38 ft (11.6 m) long and 32 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesKnox Avenue
CrossesWilson Hollow Brk
Location0.2 MI N of JCT NY-30 & N
CountyDelaware County
StateNew York
Coordinates42.08394, -74.99514
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
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to 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 alignment7: Better than present minimum criteria
Operating rating66.8 US tons
Inventory rating51.5 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length38 ft (11.6 m)
Longest span37 ft (11.2 m)
Deck width32 ft (9.8 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,482 (2021)
Projected traffic2,075 by 2041
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Knox Avenue over Wilson Hollow Brk built?

It was built in 1948, making it 77 years old in 2025. It was reconstructed in 2022.

What condition is Knox Avenue over Wilson Hollow Brk 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 November 2024.

How much traffic does Knox Avenue over Wilson Hollow Brk carry?

About 1,482 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is Knox Avenue over Wilson Hollow Brk?

The structure is 38 ft (11.6 m) long with a longest span of 37 ft (11.2 m) and a deck 32 ft wide.

Who owns Knox Avenue over Wilson Hollow Brk?

It is owned by the County Highway Agency.