US Bridges

So Main ST Ext over Stillwater Creek

Good

Chautauqua County, New York · 2.4 MI E of Busti · Structure no. 000000003323520

Built
1993
32 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
73 ft
1 main span
Daily traffic
658
2018 count
Owner
County
County Highway Agency

About this bridge

So Main ST Ext over Stillwater Creek is a steel stringer/multi-beam or girder carrying So Main ST Ext over Stillwater Creek in Chautauqua County, New York. It was built in 1993, so it is 32 years old, younger than the New York average of 53 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 658 vehicles a day, roughly 1% of them trucks, projected to reach 921 by 2038. The structure is 73 ft (22.3 m) long and 28 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesSo Main ST Ext
CrossesStillwater Creek
Location2.4 MI E of Busti
CountyChautauqua County
StateNew York
Coordinates42.03963, -79.23706
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than 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 rating110.1 US tons
Inventory rating74 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length73 ft (22.3 m)
Longest span72 ft (21.9 m)
Deck width28 ft (8.5 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic658 (2018)
Projected traffic921 by 2038
Trucks1%
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$2.2 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was So Main ST Ext over Stillwater Creek built?

It was built in 1993, making it 32 years old in 2025.

What condition is So Main ST Ext over Stillwater Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.

How much traffic does So Main ST Ext over Stillwater Creek carry?

About 658 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is So Main ST Ext over Stillwater Creek?

The structure is 73 ft (22.3 m) long with a longest span of 72 ft (21.9 m) and a deck 28 ft wide.

Who owns So Main ST Ext over Stillwater Creek?

It is owned by the County Highway Agency.