US Bridges

County Road 30 over Brandy Brook

Fair

St. Lawrence County, New York · 5 MI W of Madrid Spring · Structure no. 000000003341250

Built
1937
88 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
45 ft
1 main span
Daily traffic
474
2018 count
Owner
County
County Highway Agency

About this bridge

County Road 30 over Brandy Brook is a steel stringer/multi-beam or girder carrying County Road 30 over Brandy Brook in St. Lawrence County, New York. It was built in 1937, so it is 88 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 474 vehicles a day, roughly 7% of them trucks, projected to reach 664 by 2038. The structure is 45 ft (13.7 m) long and 39 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesCounty Road 30
CrossesBrandy Brook
Location5 MI W of Madrid Spring
RouteCounty Highway 0
CountySt. Lawrence County
StateNew York
Coordinates44.7387, -75.20447
Functional classRural Minor 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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating81 US tons
Inventory rating48 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length45 ft (13.7 m)
Longest span43 ft (13.1 m)
Deck width39 ft (11.9 m)
Roadway width37 ft (11.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic474 (2018)
Projected traffic664 by 2038
Trucks7%
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$823,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 30 over Brandy Brook built?

It was built in 1937, making it 88 years old in 2025.

What condition is County Road 30 over Brandy Brook 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 October 2023.

How much traffic does County Road 30 over Brandy Brook carry?

About 474 vehicles per day (2018 count), of which roughly 7% are trucks.

How long is County Road 30 over Brandy Brook?

The structure is 45 ft (13.7 m) long with a longest span of 43 ft (13.1 m) and a deck 39 ft wide.

Who owns County Road 30 over Brandy Brook?

It is owned by the County Highway Agency.