US Bridges

Brook Street over Catsbane Brook

Good

Cheshire County, New Hampshire · 0.38 Mi. NW Jct. Nh 9 · Structure no. 004500800012000

Built
1950
75 years old, rebuilt 2010
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
41 ft
1 main span
Daily traffic
481
2023 count
Owner
State
State Highway Agency

About this bridge

Brook Street over Catsbane Brook is a steel stringer/multi-beam or girder carrying Brook Street over Catsbane Brook in Cheshire County, New Hampshire. It was built in 1950 and reconstructed in 2010, so it is 75 years old, older than the New Hampshire average of 56.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 481 vehicles a day, roughly 10% of them trucks, projected to reach 711 by 2043. The structure is 41 ft (12.5 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesBrook Street
CrossesCatsbane Brook
Location0.38 Mi. NW Jct. Nh 9
RouteState Highway 0
Coordinates42.90114, -72.51302
Functional classRural Minor Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
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 inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating85.6 US tons
Inventory rating51.3 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length41 ft (12.5 m)
Longest span37 ft (11.4 m)
Deck width30 ft (9.2 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic481 (2023)
Projected traffic711 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$314,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Brook Street over Catsbane Brook built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 2010.

What condition is Brook Street over Catsbane 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 June 2024.

How much traffic does Brook Street over Catsbane Brook carry?

About 481 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Brook Street over Catsbane Brook?

The structure is 41 ft (12.5 m) long with a longest span of 37 ft (11.4 m) and a deck 30 ft wide.

Who owns Brook Street over Catsbane Brook?

It is owned by the State Highway Agency.