US Bridges

Spring Street over Ela River

Good

Strafford County, New Hampshire · 0.37 RTE 11 · Structure no. 008400570012600

Built
1998
27 years old
Condition
Good
inspected October 2023
Type
Slab
Prestressed Concrete
Length
48 ft
1 main span
Daily traffic
770
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Spring Street over Ela River is a prestressed concrete slab carrying Spring Street over Ela River in Strafford County, New Hampshire. It was built in 1998, so it is 27 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 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 770 vehicles a day, roughly 4% of them trucks, projected to reach 1,139 by 2043. The structure is 48 ft (14.7 m) long and 29 ft wide.

CarriesSpring Street
CrossesEla River
Location0.37 RTE 11
Coordinates43.39784, -71.09985
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92.9 US tons
Inventory rating55.9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length48 ft (14.7 m)
Longest span48 ft (14.6 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic770 (2023)
Projected traffic1,139 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
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 Spring Street over Ela River built?

It was built in 1998, making it 27 years old in 2025.

What condition is Spring Street over Ela River 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 October 2023.

How much traffic does Spring Street over Ela River carry?

About 770 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Spring Street over Ela River?

The structure is 48 ft (14.7 m) long with a longest span of 48 ft (14.6 m) and a deck 29 ft wide.

Who owns Spring Street over Ela River?

It is owned by the City or Municipal Highway Agency.