US Bridges

Thornell Rd. over Irondequoit Creek

Fair

Monroe County, New York · 3 Mi.S.E. of Pittsford · Structure no. 000000003317280

Built
1984
41 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
66 ft
1 main span
Daily traffic
5,431
2018 count
Owner
County
County Highway Agency

About this bridge

Thornell Rd. over Irondequoit Creek is a steel stringer/multi-beam or girder carrying Thornell Rd. over Irondequoit Creek in Monroe County, New York. It was built in 1984, so it is 41 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 6 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 5,431 vehicles a day, roughly 3% of them trucks, projected to reach 5,579 by 2041. The structure is 66 ft (20 m) long and 48 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesThornell Rd.
CrossesIrondequoit Creek
Location3 Mi.S.E. of Pittsford
RouteCounty Highway 0
CountyMonroe County
StateNew York
Coordinates43.05446, -77.49027
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
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 rating110.1 US tons
Inventory rating70 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length66 ft (20 m)
Longest span60 ft (18.2 m)
Deck width48 ft (14.5 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,431 (2018)
Projected traffic5,579 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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$2.6 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Thornell Rd. over Irondequoit Creek built?

It was built in 1984, making it 41 years old in 2025.

What condition is Thornell Rd. over Irondequoit 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 2024.

How much traffic does Thornell Rd. over Irondequoit Creek carry?

About 5,431 vehicles per day (2018 count), of which roughly 3% are trucks.

How long is Thornell Rd. over Irondequoit Creek?

The structure is 66 ft (20 m) long with a longest span of 60 ft (18.2 m) and a deck 48 ft wide.

Who owns Thornell Rd. over Irondequoit Creek?

It is owned by the County Highway Agency.