US Bridges

Short Falls Road over Suncook River

Good

Merrimack County, New Hampshire · .5 MI S. Jct. Rt 28 · Structure no. 007900630009300

Built
1950
75 years old, rebuilt 1992
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
129 ft
3 main spans
Daily traffic
1,540
2023 count
Owner
State
State Highway Agency

About this bridge

Short Falls Road over Suncook River is a steel continuous stringer/multi-beam or girder carrying Short Falls Road over Suncook River in Merrimack County, New Hampshire. It was built in 1950 and reconstructed in 1992, 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 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 1,540 vehicles a day, roughly 4% of them trucks, projected to reach 2,279 by 2043. The structure is 129 ft (39.3 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesShort Falls Road
CrossesSuncook River
Location.5 MI S. Jct. Rt 28
RouteState Highway 0
Coordinates43.20192, -71.38232
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating28.1 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length129 ft (39.3 m)
Longest span55 ft (16.8 m)
Deck width30 ft (9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,540 (2023)
Projected traffic2,279 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Short Falls Road over Suncook River built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1992.

What condition is Short Falls Road over Suncook River 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 Short Falls Road over Suncook River carry?

About 1,540 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Short Falls Road over Suncook River?

The structure is 129 ft (39.3 m) long with a longest span of 55 ft (16.8 m) and a deck 30 ft wide.

Who owns Short Falls Road over Suncook River?

It is owned by the State Highway Agency.