US Bridges

RTE 31F over Irondequoit Creek

Good

Monroe County, New York · 0.5 M E of Marsh RD · Structure no. 000000001022120

Built
1931
94 years old, rebuilt 2011
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
45 ft
1 main span
Daily traffic
20,654
2020 count
Owner
State
State Highway Agency

About this bridge

RTE 31F over Irondequoit Creek is a steel stringer/multi-beam or girder carrying RTE 31F over Irondequoit Creek in Monroe County, New York. It was built in 1931 and reconstructed in 2011, so it is 94 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 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 20,654 vehicles a day, roughly 3% of them trucks, projected to reach 25,090 by 2041. The structure is 45 ft (13.7 m) long and 62 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesRTE 31F
CrossesIrondequoit Creek
Location0.5 M E of Marsh RD
RouteState Highway 31F
CountyMonroe County
StateNew York
Coordinates43.10229, -77.47079
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
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length45 ft (13.7 m)
Longest span41 ft (12.6 m)
Deck width62 ft (19 m)
Roadway width49 ft (14.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,654 (2020)
Projected traffic25,090 by 2041
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemNo

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$2.7 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 31F over Irondequoit Creek built?

It was built in 1931, making it 94 years old in 2025. It was reconstructed in 2011.

What condition is RTE 31F over Irondequoit 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 August 2023.

How much traffic does RTE 31F over Irondequoit Creek carry?

About 20,654 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is RTE 31F over Irondequoit Creek?

The structure is 45 ft (13.7 m) long with a longest span of 41 ft (12.6 m) and a deck 62 ft wide.

Who owns RTE 31F over Irondequoit Creek?

It is owned by the State Highway Agency.