US Bridges

RTE 23 over Middle Brook

Fair

Delaware County, New York · 7.5 M West JCT Rt 23 & 10 · Structure no. 000000001017630

Built
1996
29 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
242 ft
2 main spans
Daily traffic
3,108
2016 count
Owner
State
State Highway Agency

About this bridge

RTE 23 over Middle Brook is a steel continuous stringer/multi-beam or girder carrying RTE 23 over Middle Brook in Delaware County, New York. It was built in 1996, so it is 29 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 3,108 vehicles a day, roughly 10% of them trucks, projected to reach 3,127 by 2041. The structure is 242 ft (73.8 m) long and 42 ft wide. If it were closed, the detour would be 51.6 mi (83 km).

Location

Open in Google Maps
CarriesRTE 23
CrossesMiddle Brook
Location7.5 M West JCT Rt 23 & 10
RouteState Highway 23
CountyDelaware County
StateNew York
Coordinates42.44709, -74.759
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating96 US tons
Inventory rating57 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length242 ft (73.8 m)
Longest span130 ft (39.6 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,108 (2016)
Projected traffic3,127 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed51.6 mi (83 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$4.3 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 23 over Middle Brook built?

It was built in 1996, making it 29 years old in 2025.

What condition is RTE 23 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 August 2024.

How much traffic does RTE 23 over Middle Brook carry?

About 3,108 vehicles per day (2016 count), of which roughly 10% are trucks.

How long is RTE 23 over Middle Brook?

The structure is 242 ft (73.8 m) long with a longest span of 130 ft (39.6 m) and a deck 42 ft wide.

Who owns RTE 23 over Middle Brook?

It is owned by the State Highway Agency.