US Bridges

RTE 8 over Cold Brook

Good

Herkimer County, New York · 1.9 MI N JCT Rts 28 & 8 · Structure no. 000000001004730

Built
1998
27 years old
Condition
Good
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
49 ft
1 main span
Daily traffic
1,012
2020 count
Owner
State
State Highway Agency

About this bridge

RTE 8 over Cold Brook is a prestressed concrete box beam or girders - multiple carrying RTE 8 over Cold Brook in Herkimer County, New York. It was built in 1998, so it is 27 years old, younger than the New York average of 53 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,012 vehicles a day, roughly 13% of them trucks, projected to reach 1,018 by 2041. The structure is 49 ft (14.9 m) long and 41 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesRTE 8
CrossesCold Brook
Location1.9 MI N JCT Rts 28 & 8
RouteState Highway 8
Coordinates43.24524, -75.03568
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.9 US tons
Inventory rating55 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length49 ft (14.9 m)
Longest span42 ft (12.8 m)
Deck width41 ft (12.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,012 (2020)
Projected traffic1,018 by 2041
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed9.9 mi (16 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$994,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 8 over Cold Brook built?

It was built in 1998, making it 27 years old in 2025.

What condition is RTE 8 over Cold Brook in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2024.

How much traffic does RTE 8 over Cold Brook carry?

About 1,012 vehicles per day (2020 count), of which roughly 13% are trucks.

How long is RTE 8 over Cold Brook?

The structure is 49 ft (14.9 m) long with a longest span of 42 ft (12.8 m) and a deck 41 ft wide.

Who owns RTE 8 over Cold Brook?

It is owned by the State Highway Agency.