US Bridges

Mountain Turnpike over Kiskatom Brook

Fair

Greene County, New York · 1 MI E of Lawrenceville · Structure no. 000000003200620

Built
2004
21 years old
Condition
Fair
inspected July 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
46 ft
1 main span
Daily traffic
633
2021 count
Owner
County
County Highway Agency

About this bridge

Mountain Turnpike over Kiskatom Brook is a prestressed concrete box beam or girders - multiple carrying Mountain Turnpike over Kiskatom Brook in Greene County, New York. It was built in 2004, so it is 21 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 633 vehicles a day, roughly 4% of them trucks, projected to reach 886 by 2041. The structure is 46 ft (14 m) long and 27 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesMountain Turnpike
CrossesKiskatom Brook
Location1 MI E of Lawrenceville
Coordinates42.20466, -73.97452
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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating103 US tons
Inventory rating60 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length46 ft (14 m)
Longest span43 ft (13 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic633 (2021)
Projected traffic886 by 2041
Trucks4%
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$629,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mountain Turnpike over Kiskatom Brook built?

It was built in 2004, making it 21 years old in 2025.

What condition is Mountain Turnpike over Kiskatom 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 July 2024.

How much traffic does Mountain Turnpike over Kiskatom Brook carry?

About 633 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is Mountain Turnpike over Kiskatom Brook?

The structure is 46 ft (14 m) long with a longest span of 43 ft (13 m) and a deck 27 ft wide.

Who owns Mountain Turnpike over Kiskatom Brook?

It is owned by the County Highway Agency.