US Bridges

NH101 EB over King Street

Good

Rockingham County, New Hampshire · 3.5 MI JCT RTE 28 · Structure no. 001300600013300

Built
1961
64 years old, rebuilt 2004
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
63 ft
1 main span
Daily traffic
28,293
2023 count
Owner
State
State Highway Agency

About this bridge

NH101 EB over King Street is a steel stringer/multi-beam or girder carrying NH101 EB over King Street in Rockingham County, New Hampshire. It was built in 1961 and reconstructed in 2004, so it is 64 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 28,293 vehicles a day, roughly 9% of them trucks, projected to reach 41,873 by 2043. The structure is 63 ft (19.2 m) long and 63 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesNH101 EB
CrossesKing Street
Location3.5 MI JCT RTE 28
RouteState Highway 101
Coordinates43.01046, -71.38444
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.8 US tons
Inventory rating46 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length63 ft (19.2 m)
Longest span57 ft (17.4 m)
Deck width63 ft (19.1 m)
Roadway width59 ft (18 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,293 (2023)
Projected traffic41,873 by 2043
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 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)
NavigationNot applicable (no waterway)

Frequently asked questions

When was NH101 EB over King Street built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 2004.

What condition is NH101 EB over King Street 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 March 2023.

How much traffic does NH101 EB over King Street carry?

About 28,293 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is NH101 EB over King Street?

The structure is 63 ft (19.2 m) long with a longest span of 57 ft (17.4 m) and a deck 63 ft wide.

Who owns NH101 EB over King Street?

It is owned by the State Highway Agency.