US Bridges

South Main Street over Chadakoin River

Good

Chautauqua County, New York · At Jamestown · Structure no. 000000002258360

Built
1872
153 years old, rebuilt 2018
Condition
Good
inspected November 2024
Type
Arch - Deck
Masonry
Length
75 ft
2 main spans
Daily traffic
5,837
2019 count
Owner
County
County Highway Agency

About this bridge

South Main Street over Chadakoin River is a masonry arch - deck carrying South Main Street over Chadakoin River in Chautauqua County, New York. It was built in 1872 and reconstructed in 2018, so it is 153 years old, older 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 5,837 vehicles a day, roughly 3% of them trucks, projected to reach 6,163 by 2041. The structure is 75 ft (22.9 m) long and 65 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesSouth Main Street
CrossesChadakoin River
LocationAt Jamestown
RouteCity Street 0
Coordinates42.09399, -79.24027
Functional classUrban Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
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 adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating52.2 US tons
Inventory rating23.6 US tons

Structure

Structure typeArch - Deck
MaterialMasonry
DeckNot applicable
Main spans2
Design loadUnknown
Structure length75 ft (22.9 m)
Longest span30 ft (9.1 m)
Deck width65 ft (19.9 m)
Roadway width42 ft (12.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,837 (2019)
Projected traffic6,163 by 2041
Trucks3%
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 statusHistorical significance not determinable at this time
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$4.4 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was South Main Street over Chadakoin River built?

It was built in 1872, making it 153 years old in 2025. It was reconstructed in 2018.

What condition is South Main Street over Chadakoin River 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 November 2024.

How much traffic does South Main Street over Chadakoin River carry?

About 5,837 vehicles per day (2019 count), of which roughly 3% are trucks.

How long is South Main Street over Chadakoin River?

The structure is 75 ft (22.9 m) long with a longest span of 30 ft (9.1 m) and a deck 65 ft wide.

Who owns South Main Street over Chadakoin River?

It is owned by the County Highway Agency.