US Bridges

Nh 10 over Giles Brook

Fair

Sullivan County, New Hampshire · 0.4 MI from Goshen Tl · Structure no. 014601230017100

Built
1934
91 years old, rebuilt 1976
Condition
Fair
inspected April 2024
Type
Slab
Concrete
Length
24 ft
1 main span
Daily traffic
1,745
2023 count
Owner
State
State Highway Agency

About this bridge

Nh 10 over Giles Brook is a concrete slab carrying Nh 10 over Giles Brook in Sullivan County, New Hampshire. It was built in 1934 and reconstructed in 1976, so it is 91 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 fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,745 vehicles a day, roughly 4% of them trucks, projected to reach 2,582 by 2043. The structure is 24 ft (7.3 m) long and 33 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

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CarriesNh 10
CrossesGiles Brook
Location0.4 MI from Goshen Tl
RouteState Highway 10
CountySullivan County
StateNew Hampshire
Coordinates43.27404, -72.15661
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating39 US tons
Inventory rating24 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length24 ft (7.3 m)
Longest span22 ft (6.7 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,745 (2023)
Projected traffic2,582 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 Nh 10 over Giles Brook built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 1976.

What condition is Nh 10 over Giles Brook in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2024.

How much traffic does Nh 10 over Giles Brook carry?

About 1,745 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Nh 10 over Giles Brook?

The structure is 24 ft (7.3 m) long with a longest span of 22 ft (6.7 m) and a deck 33 ft wide.

Who owns Nh 10 over Giles Brook?

It is owned by the State Highway Agency.