US Bridges

RTE 31 over Still Brook

Fair

Orleans County, New York · 3.6MI E JCT Rts 31 + 63 · Structure no. 000000001021530

Built
1933
92 years old
Condition
Fair
inspected August 2023
Type
Frame
Concrete
Length
27 ft
1 main span
Daily traffic
3,848
2020 count
Owner
State
State Highway Agency

About this bridge

RTE 31 over Still Brook is a concrete frame carrying RTE 31 over Still Brook in Orleans County, New York. It was built in 1933, so it is 92 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 3,848 vehicles a day, roughly 6% of them trucks, projected to reach 3,884 by 2041. The structure is 27 ft (8.2 m) long and 41 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

Location

Open in Google Maps
CarriesRTE 31
CrossesStill Brook
Location3.6MI E JCT Rts 31 + 63
RouteState Highway 31
CountyOrleans County
StateNew York
Coordinates43.22958, -78.31781
Functional classRural Principal Arterial - Other

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.3 US tons
Inventory rating36 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length27 ft (8.2 m)
Longest span23 ft (7 m)
Deck width41 ft (12.5 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,848 (2020)
Projected traffic3,884 by 2041
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 km)
TollOn a free road
National Highway SystemYes

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$623,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 31 over Still Brook built?

It was built in 1933, making it 92 years old in 2025.

What condition is RTE 31 over Still Brook 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 August 2023.

How much traffic does RTE 31 over Still Brook carry?

About 3,848 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is RTE 31 over Still Brook?

The structure is 27 ft (8.2 m) long with a longest span of 23 ft (7 m) and a deck 41 ft wide.

Who owns RTE 31 over Still Brook?

It is owned by the State Highway Agency.