US Bridges

Mcgaw Bridge Road over Baboosic Brook

Good

Hillsborough County, New Hampshire · 0.13 MI FR Wire Road · Structure no. 016801160013700

Built
2016
9 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
47 ft
1 main span
Daily traffic
1,091
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mcgaw Bridge Road over Baboosic Brook is a steel stringer/multi-beam or girder carrying Mcgaw Bridge Road over Baboosic Brook in Hillsborough County, New Hampshire. It was built in 2016, so it is 9 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 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 1,091 vehicles a day, roughly 4% of them trucks, projected to reach 1,614 by 2043. The structure is 47 ft (14.2 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesMcgaw Bridge Road
CrossesBaboosic Brook
Location0.13 MI FR Wire Road
RouteCity Street 0
CountyHillsborough County
StateNew Hampshire
Coordinates42.87247, -71.49405
Functional classUrban Local

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 protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
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 rating58.2 US tons
Inventory rating44.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length47 ft (14.2 m)
Longest span41 ft (12.6 m)
Deck width36 ft (11.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,091 (2023)
Projected traffic1,614 by 2043
Trucks4%
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

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 Mcgaw Bridge Road over Baboosic Brook built?

It was built in 2016, making it 9 years old in 2025.

What condition is Mcgaw Bridge Road over Baboosic 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 September 2023.

How much traffic does Mcgaw Bridge Road over Baboosic Brook carry?

About 1,091 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Mcgaw Bridge Road over Baboosic Brook?

The structure is 47 ft (14.2 m) long with a longest span of 41 ft (12.6 m) and a deck 36 ft wide.

Who owns Mcgaw Bridge Road over Baboosic Brook?

It is owned by the City or Municipal Highway Agency.