US Bridges

Cascade Avenue over Mill Creek

Fair

Lewis County, New York · Btw Jefferson & Rural Rds · Structure no. 000000003340200

Built
2001
24 years old
Condition
Fair
inspected December 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
76 ft
1 main span
Daily traffic
850
2018 count
Owner
County
County Highway Agency

About this bridge

Cascade Avenue over Mill Creek is a prestressed concrete box beam or girders - multiple carrying Cascade Avenue over Mill Creek in Lewis County, New York. It was built in 2001, so it is 24 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 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 850 vehicles a day, roughly 4% of them trucks, projected to reach 1,190 by 2038. The structure is 76 ft (23.2 m) long and 43 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesCascade Avenue
CrossesMill Creek
LocationBtw Jefferson & Rural Rds
Coordinates43.78448, -75.49359
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure9 ExcellentNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 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 adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.1 US tons
Inventory rating45 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length76 ft (23.2 m)
Longest span73 ft (22.1 m)
Deck width43 ft (13.1 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic850 (2018)
Projected traffic1,190 by 2038
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 proposedDeck replacement with only incidental widening
Estimated improvement cost$1.2 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cascade Avenue over Mill Creek built?

It was built in 2001, making it 24 years old in 2025.

What condition is Cascade Avenue over Mill Creek 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 December 2023.

How much traffic does Cascade Avenue over Mill Creek carry?

About 850 vehicles per day (2018 count), of which roughly 4% are trucks.

How long is Cascade Avenue over Mill Creek?

The structure is 76 ft (23.2 m) long with a longest span of 73 ft (22.1 m) and a deck 43 ft wide.

Who owns Cascade Avenue over Mill Creek?

It is owned by the County Highway Agency.