US Bridges

Alderman Road over Ganargua Creek

Good

Wayne County, New York · 1.5 MI E of Macedon · Structure no. 000000003314520

Built
2011
14 years old
Condition
Good
inspected November 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
124 ft
1 main span
Daily traffic
1,560
2020 count
Owner
County
County Highway Agency

About this bridge

Alderman Road over Ganargua Creek is a prestressed concrete box beam or girders - multiple carrying Alderman Road over Ganargua Creek in Wayne County, New York. It was built in 2011, so it is 14 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 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 1,560 vehicles a day, roughly 10% of them trucks, projected to reach 1,602 by 2041. The structure is 124 ft (37.8 m) long and 37 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesAlderman Road
CrossesGanargua Creek
Location1.5 MI E of Macedon
Coordinates43.06566, -77.27786
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating91.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length124 ft (37.8 m)
Longest span120 ft (36.6 m)
Deck width37 ft (11.4 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,560 (2020)
Projected traffic1,602 by 2041
Trucks10%
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$1.9 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Alderman Road over Ganargua Creek built?

It was built in 2011, making it 14 years old in 2025.

What condition is Alderman Road over Ganargua 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 November 2023.

How much traffic does Alderman Road over Ganargua Creek carry?

About 1,560 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Alderman Road over Ganargua Creek?

The structure is 124 ft (37.8 m) long with a longest span of 120 ft (36.6 m) and a deck 37 ft wide.

Who owns Alderman Road over Ganargua Creek?

It is owned by the County Highway Agency.