US Bridges

Rowentown Road over S Branch Baker River

Good

Grafton County, New Hampshire · .2 MI FR No Dorchester R · Structure no. 026901370005800

Built
1995
30 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
67 ft
1 main span
Daily traffic
96
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Rowentown Road over S Branch Baker River is a steel stringer/multi-beam or girder carrying Rowentown Road over S Branch Baker River in Grafton County, New Hampshire. It was built in 1995, so it is 30 years old, younger 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 96 vehicles a day, roughly 4% of them trucks, projected to reach 142 by 2043. The structure is 67 ft (20.4 m) long and 27 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesRowentown Road
CrossesS Branch Baker River
Location.2 MI FR No Dorchester R
Coordinates43.82373, -71.92201
Functional classRural Local

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 inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating80.5 US tons
Inventory rating48.2 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length67 ft (20.4 m)
Longest span62 ft (18.9 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic96 (2023)
Projected traffic142 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
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 Rowentown Road over S Branch Baker River built?

It was built in 1995, making it 30 years old in 2025.

What condition is Rowentown Road over S Branch Baker 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 September 2023.

How much traffic does Rowentown Road over S Branch Baker River carry?

About 96 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Rowentown Road over S Branch Baker River?

The structure is 67 ft (20.4 m) long with a longest span of 62 ft (18.9 m) and a deck 27 ft wide.

Who owns Rowentown Road over S Branch Baker River?

It is owned by the City or Municipal Highway Agency.