US Bridges

US 1 Bypass over Hodgson Brook

Good

Rockingham County, New Hampshire · 0.3 MI JCT I-95 · Structure no. 021701920010600

Built
1940
85 years old, rebuilt 2020
Condition
Good
inspected June 2023
Type
Culvert
Concrete Continuous
Length
45 ft
5 main spans
Daily traffic
16,307
2023 count
Owner
State
State Highway Agency

About this bridge

US 1 Bypass over Hodgson Brook is a concrete continuous culvert carrying US 1 Bypass over Hodgson Brook in Rockingham County, New Hampshire. It was built in 1940 and reconstructed in 2020, so it is 85 years old, older 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 16,307 vehicles a day, roughly 8% of them trucks, projected to reach 24,134 by 2043. The structure is 45 ft (13.7 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesUS 1 Bypass
CrossesHodgson Brook
Location0.3 MI JCT I-95
RouteU.S. Route 1
CountyRockingham County
StateNew Hampshire
Coordinates43.06939, -70.77837
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans5
Design loadH 20
Structure length45 ft (13.7 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,307 (2023)
Projected traffic24,134 by 2043
Trucks8%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
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 US 1 Bypass over Hodgson Brook built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 2020.

What condition is US 1 Bypass over Hodgson 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 2023.

How much traffic does US 1 Bypass over Hodgson Brook carry?

About 16,307 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is US 1 Bypass over Hodgson Brook?

The structure is 45 ft (13.7 m) long with a longest span of 8 ft (2.4 m).

Who owns US 1 Bypass over Hodgson Brook?

It is owned by the State Highway Agency.