US Bridges

Harper Road over Middle Brook

Fair

Delaware County, New York · 6.8 MI NW of Stamford · Structure no. 000000003352770

Built
1990
35 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
56 ft
1 main span
Daily traffic
118
2017 count
Owner
County
County Highway Agency

About this bridge

Harper Road over Middle Brook is a steel stringer/multi-beam or girder carrying Harper Road over Middle Brook in Delaware County, New York. It was built in 1990, so it is 35 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 6 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 118 vehicles a day, roughly 14% of them trucks, projected to reach 165 by 2037. The structure is 56 ft (17.1 m) long and 20 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

Open in Google Maps
CarriesHarper Road
CrossesMiddle Brook
Location6.8 MI NW of Stamford
CountyDelaware County
StateNew York
Coordinates42.45851, -74.74221
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.1 US tons
Inventory rating29 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadH 15
Structure length56 ft (17.1 m)
Longest span52 ft (15.8 m)
Deck width20 ft (6.1 m)
Roadway width18 ft (5.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic118 (2017)
Projected traffic165 by 2037
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 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$1.2 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Harper Road over Middle Brook built?

It was built in 1990, making it 35 years old in 2025.

What condition is Harper Road over Middle 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 May 2023.

How much traffic does Harper Road over Middle Brook carry?

About 118 vehicles per day (2017 count), of which roughly 14% are trucks.

How long is Harper Road over Middle Brook?

The structure is 56 ft (17.1 m) long with a longest span of 52 ft (15.8 m) and a deck 20 ft wide.

Who owns Harper Road over Middle Brook?

It is owned by the County Highway Agency.