US Bridges

Webster Highway over Whiting Brook

Good

Hillsborough County, New Hampshire · 0.30MI Wilton Tl · Structure no. 025301160013300

Built
2000
25 years old
Condition
Good
inspected June 2024
Type
Slab
Concrete
Length
30 ft
1 main span
Daily traffic
184
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Webster Highway over Whiting Brook is a concrete slab carrying Webster Highway over Whiting Brook in Hillsborough County, New Hampshire. It was built in 2000, so it is 25 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 184 vehicles a day, roughly 4% of them trucks, projected to reach 272 by 2043. The structure is 30 ft (9.1 m) long and 37 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesWebster Highway
CrossesWhiting Brook
Location0.30MI Wilton Tl
RouteCity Street 0
Coordinates42.85625, -71.83087
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum 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 rating90.2 US tons
Inventory rating54 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length30 ft (9.1 m)
Longest span28 ft (8.5 m)
Deck width37 ft (11.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic184 (2023)
Projected traffic272 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 Webster Highway over Whiting Brook built?

It was built in 2000, making it 25 years old in 2025.

What condition is Webster Highway over Whiting 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 Webster Highway over Whiting Brook carry?

About 184 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Webster Highway over Whiting Brook?

The structure is 30 ft (9.1 m) long with a longest span of 28 ft (8.5 m) and a deck 37 ft wide.

Who owns Webster Highway over Whiting Brook?

It is owned by the City or Municipal Highway Agency.