US Bridges

State Park Road over Silver Lake Outlet

Fair

Livingston County, New York · At Letchworth State Park · Structure no. 000000005035790

Built
1936
89 years old, rebuilt 1989
Condition
Fair
inspected May 2023
Type
Arch - Deck
Concrete
Length
85 ft
1 main span
Daily traffic
587
2020 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

State Park Road over Silver Lake Outlet is a concrete arch - deck carrying State Park Road over Silver Lake Outlet in Livingston County, New York. It was built in 1936 and reconstructed in 1989, so it is 89 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 587 vehicles a day, roughly 7% of them trucks, projected to reach 822 by 2040. The structure is 85 ft (25.9 m) long and 31 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesState Park Road
CrossesSilver Lake Outlet
LocationAt Letchworth State Park
RouteState Lands Road 0
CountyLivingston County
StateNew York
Coordinates42.70134, -77.93853
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
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating69.9 US tons
Inventory rating26.7 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length85 ft (25.9 m)
Longest span78 ft (23.7 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic587 (2020)
Projected traffic822 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Park, Forest, or Reservation Agency
Maintained byState Park, Forest, or Reservation Agency
Historic statusEligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$3.1 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was State Park Road over Silver Lake Outlet built?

It was built in 1936, making it 89 years old in 2025. It was reconstructed in 1989.

What condition is State Park Road over Silver Lake Outlet 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 May 2023.

How much traffic does State Park Road over Silver Lake Outlet carry?

About 587 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is State Park Road over Silver Lake Outlet?

The structure is 85 ft (25.9 m) long with a longest span of 78 ft (23.7 m) and a deck 31 ft wide.

Who owns State Park Road over Silver Lake Outlet?

It is owned by the State Park, Forest, or Reservation Agency.