US Bridges

Fowler River Road over Bog Brook

Good

Grafton County, New Hampshire · 0.1 MI from Bristol Tl · Structure no. 000301740014600

Built
1927
98 years old, rebuilt 2017
Condition
Good
inspected April 2024
Type
Slab
Concrete Continuous
Length
30 ft
1 main span
Daily traffic
823
2023 count
Owner
State
State Highway Agency

About this bridge

Fowler River Road over Bog Brook is a concrete continuous slab carrying Fowler River Road over Bog Brook in Grafton County, New Hampshire. It was built in 1927 and reconstructed in 2017, so it is 98 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 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 823 vehicles a day, roughly 10% of them trucks, projected to reach 1,218 by 2043. The structure is 30 ft (9.1 m) long and 63 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesFowler River Road
CrossesBog Brook
Location0.1 MI from Bristol Tl
RouteState Highway 0
Coordinates43.62463, -71.77472
Functional classRural Minor Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.9 US tons
Inventory rating53.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length30 ft (9.1 m)
Longest span27 ft (8.2 m)
Deck width63 ft (19.3 m)
Roadway width60 ft (18.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic823 (2023)
Projected traffic1,218 by 2043
Trucks10%
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

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 Fowler River Road over Bog Brook built?

It was built in 1927, making it 98 years old in 2025. It was reconstructed in 2017.

What condition is Fowler River Road over Bog 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 April 2024.

How much traffic does Fowler River Road over Bog Brook carry?

About 823 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Fowler River Road over Bog Brook?

The structure is 30 ft (9.1 m) long with a longest span of 27 ft (8.2 m) and a deck 63 ft wide.

Who owns Fowler River Road over Bog Brook?

It is owned by the State Highway Agency.