US Bridges

Cocheco Road over Cocheco River

Poor

Strafford County, New Hampshire · 0.15MI. RTE 75 · Structure no. 008401210014100

Built
1953
72 years old, rebuilt 2004
Condition
Poor
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
64 ft
1 main span
Daily traffic
1,773
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Cocheco Road over Cocheco River is a steel stringer/multi-beam or girder carrying Cocheco Road over Cocheco River in Strafford County, New Hampshire. It was built in 1953 and reconstructed in 2004, so it is 72 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 1,773 vehicles a day, roughly 4% of them trucks, projected to reach 2,624 by 2043. The structure is 64 ft (19.5 m) long and 22 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesCocheco Road
CrossesCocheco River
Location0.15MI. RTE 75
Coordinates43.37598, -71.04148
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 16 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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating38.7 US tons
Inventory rating23.1 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length64 ft (19.5 m)
Longest span57 ft (17.4 m)
Deck width22 ft (6.6 m)
Roadway width18 ft (5.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,773 (2023)
Projected traffic2,624 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

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 Cocheco Road over Cocheco River built?

It was built in 1953, making it 72 years old in 2025. It was reconstructed in 2004.

What condition is Cocheco Road over Cocheco River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.

How much traffic does Cocheco Road over Cocheco River carry?

About 1,773 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Cocheco Road over Cocheco River?

The structure is 64 ft (19.5 m) long with a longest span of 57 ft (17.4 m) and a deck 22 ft wide.

Who owns Cocheco Road over Cocheco River?

It is owned by the City or Municipal Highway Agency.