US Bridges

NH107A over CSX Road

Fair

Rockingham County, New Hampshire · 0.6 MI Kingston Tl · Structure no. 007100610006400

Built
1937
88 years old, rebuilt 2018
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
123 ft
3 main spans
Daily traffic
2,056
2023 count
Owner
State
State Highway Agency

About this bridge

NH107A over CSX Road is a steel stringer/multi-beam or girder carrying NH107A over CSX Road in Rockingham County, New Hampshire. It was built in 1937 and reconstructed in 2018, so it is 88 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 6 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 2,056 vehicles a day, roughly 4% of them trucks, projected to reach 3,042 by 2043. The structure is 123 ft (37.5 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNH107A
CrossesCSX Road
Location0.6 MI Kingston Tl
RouteState Highway 107A
CountyRockingham County
StateNew Hampshire
Coordinates42.91272, -71.02242
Functional classUrban 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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99.5 US tons
Inventory rating76.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length123 ft (37.5 m)
Longest span40 ft (12.2 m)
Deck width32 ft (9.8 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,056 (2023)
Projected traffic3,042 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
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)
NavigationNot applicable (no waterway)

Frequently asked questions

When was NH107A over CSX Road built?

It was built in 1937, making it 88 years old in 2025. It was reconstructed in 2018.

What condition is NH107A over CSX Road 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 June 2024.

How much traffic does NH107A over CSX Road carry?

About 2,056 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is NH107A over CSX Road?

The structure is 123 ft (37.5 m) long with a longest span of 40 ft (12.2 m) and a deck 32 ft wide.

Who owns NH107A over CSX Road?

It is owned by the State Highway Agency.