US Bridges

Erb Road over Four Mile Brook

Fair

Hamilton County, New York · 3.1 MI SW of Hoffmeister · Structure no. 000000003307460

Built
1978
47 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
63 ft
1 main span
Daily traffic
4
2018 count
Owner
County
County Highway Agency

About this bridge

Erb Road over Four Mile Brook is a steel stringer/multi-beam or girder carrying Erb Road over Four Mile Brook in Hamilton County, New York. It was built in 1978, so it is 47 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 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 4 vehicles a day, roughly 15% of them trucks, projected to reach 6 by 2038. The structure is 63 ft (19.2 m) long and 14 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesErb Road
CrossesFour Mile Brook
Location3.1 MI SW of Hoffmeister
CountyHamilton County
StateNew York
Coordinates43.37677, -74.77924
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating58 US tons
Inventory rating35.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length63 ft (19.2 m)
Longest span60 ft (18.3 m)
Deck width14 ft (4.3 m)
Roadway width14 ft (4.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4 (2018)
Projected traffic6 by 2038
Trucks15%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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$312,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Erb Road over Four Mile Brook built?

It was built in 1978, making it 47 years old in 2025.

What condition is Erb Road over Four Mile 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 Erb Road over Four Mile Brook carry?

About 4 vehicles per day (2018 count), of which roughly 15% are trucks.

How long is Erb Road over Four Mile Brook?

The structure is 63 ft (19.2 m) long with a longest span of 60 ft (18.3 m) and a deck 14 ft wide.

Who owns Erb Road over Four Mile Brook?

It is owned by the County Highway Agency.