US Bridges

Railroad Mills Roa over Irondequoit Creek

Fair

Ontario County, New York · 2.5 MI NE of Mendon · Structure no. 000000003318510

Built
1953
72 years old, rebuilt 1995
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
55 ft
1 main span
Daily traffic
464
2021 count
Owner
County
County Highway Agency

About this bridge

Railroad Mills Roa over Irondequoit Creek is a steel stringer/multi-beam or girder carrying Railroad Mills Roa over Irondequoit Creek in Ontario County, New York. It was built in 1953 and reconstructed in 1995, so it is 72 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 464 vehicles a day, roughly 4% of them trucks, projected to reach 650 by 2041. The structure is 55 ft (16.8 m) long and 23 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesRailroad Mills Roa
CrossesIrondequoit Creek
Location2.5 MI NE of Mendon
Coordinates43.02791, -77.47919
Functional classUrban 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
Deck8 Very GoodNo problems noted.
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 inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating65 US tons
Inventory rating40 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadH 15
Structure length55 ft (16.8 m)
Longest span51 ft (15.5 m)
Deck width23 ft (7 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic464 (2021)
Projected traffic650 by 2041
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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$925,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Railroad Mills Roa over Irondequoit Creek built?

It was built in 1953, making it 72 years old in 2025. It was reconstructed in 1995.

What condition is Railroad Mills Roa 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 May 2024.

How much traffic does Railroad Mills Roa over Irondequoit Creek carry?

About 464 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is Railroad Mills Roa over Irondequoit Creek?

The structure is 55 ft (16.8 m) long with a longest span of 51 ft (15.5 m) and a deck 23 ft wide.

Who owns Railroad Mills Roa over Irondequoit Creek?

It is owned by the County Highway Agency.