US Bridges

Market Street EB over Tidal Basin

Fair

Rockingham County, New Hampshire · .5 MI E JCT I-95 · Structure no. 021702400010600

Built
1971
54 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
133 ft
3 main spans
Daily traffic
7,353
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Market Street EB over Tidal Basin is a steel continuous stringer/multi-beam or girder carrying Market Street EB over Tidal Basin in Rockingham County, New Hampshire. It was built in 1971, so it is 54 years old, younger 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 7,353 vehicles a day, roughly 5% of them trucks, projected to reach 10,882 by 2043. The structure is 133 ft (40.5 m) long and 48 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesMarket Street EB
CrossesTidal Basin
Location.5 MI E JCT I-95
RouteState Highway 0
CountyRockingham County
StateNew Hampshire
Coordinates43.08302, -70.76352
Functional classUrban Minor Arterial

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.8 US tons
Inventory rating30.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length133 ft (40.5 m)
Longest span50 ft (15.1 m)
Deck width48 ft (14.5 m)
Roadway width36 ft (11.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,353 (2023)
Projected traffic10,882 by 2043
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Market Street EB over Tidal Basin built?

It was built in 1971, making it 54 years old in 2025.

What condition is Market Street EB over Tidal Basin 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 October 2023.

How much traffic does Market Street EB over Tidal Basin carry?

About 7,353 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Market Street EB over Tidal Basin?

The structure is 133 ft (40.5 m) long with a longest span of 50 ft (15.1 m) and a deck 48 ft wide.

Who owns Market Street EB over Tidal Basin?

It is owned by the City or Municipal Highway Agency.