US Bridges

Morrill Hill Road over Elbow Brook

Good

Merrimack County, New Hampshire · 0.3 MI FR Sleeper Hill R · Structure no. 000801270010600

Built
2018
7 years old
Condition
Good
inspected October 2024
Type
Slab
Concrete
Length
26 ft
1 main span
Daily traffic
94
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Morrill Hill Road over Elbow Brook is a concrete slab carrying Morrill Hill Road over Elbow Brook in Merrimack County, New Hampshire. It was built in 2018, so it is 7 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 94 vehicles a day, roughly 4% of them trucks, projected to reach 139 by 2043. The structure is 26 ft (7.9 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMorrill Hill Road
CrossesElbow Brook
Location0.3 MI FR Sleeper Hill R
Coordinates43.44235, -71.79398
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 protection9 ExcellentNo problems noted.
Last inspectionOctober 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.9 US tons
Inventory rating56.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length26 ft (7.9 m)
Longest span24 ft (7.3 m)
Deck width27 ft (8.2 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic94 (2023)
Projected traffic139 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 Morrill Hill Road over Elbow Brook built?

It was built in 2018, making it 7 years old in 2025.

What condition is Morrill Hill Road over Elbow 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 Morrill Hill Road over Elbow Brook carry?

About 94 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Morrill Hill Road over Elbow Brook?

The structure is 26 ft (7.9 m) long with a longest span of 24 ft (7.3 m) and a deck 27 ft wide.

Who owns Morrill Hill Road over Elbow Brook?

It is owned by the City or Municipal Highway Agency.