US Bridges

Woodward Hill Road over Brennan Brook

Good

Hillsborough County, New Hampshire · Town RD · Structure no. 008601210007700

Built
2015
10 years old
Condition
Good
inspected October 2024
Type
Tee Beam
Prestressed Concrete
Length
52 ft
1 main span
Daily traffic
96
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Woodward Hill Road over Brennan Brook is a prestressed concrete tee beam carrying Woodward Hill Road over Brennan Brook in Hillsborough County, New Hampshire. It was built in 2015, so it is 10 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 96 vehicles a day, roughly 4% of them trucks, projected to reach 142 by 2043. The structure is 52 ft (15.8 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesWoodward Hill Road
CrossesBrennan Brook
LocationTown RD
Coordinates42.96927, -71.78893
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72 US tons
Inventory rating55.4 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length52 ft (15.8 m)
Longest span47 ft (14.3 m)
Deck width28 ft (8.5 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 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 Woodward Hill Road over Brennan Brook built?

It was built in 2015, making it 10 years old in 2025.

What condition is Woodward Hill Road over Brennan 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 October 2024.

How much traffic does Woodward Hill Road over Brennan Brook carry?

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

How long is Woodward Hill Road over Brennan Brook?

The structure is 52 ft (15.8 m) long with a longest span of 47 ft (14.3 m) and a deck 28 ft wide.

Who owns Woodward Hill Road over Brennan Brook?

It is owned by the City or Municipal Highway Agency.