US Bridges

Coburn Ave over Webb River

Good

Oxford County, Maine · 0.4 MI W Rt 142 · Structure no. 3326

Built
2008
17 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
94 ft
1 main span
Daily traffic
231
2016 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Coburn Ave over Webb River is a steel stringer/multi-beam or girder carrying Coburn Ave over Webb River in Oxford County, Maine. It was built in 2008, so it is 17 years old, younger than the Maine average of 53.7 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 231 vehicles a day, roughly 5% of them trucks, projected to reach 370 by 2036. The structure is 94 ft (28.7 m) long and 14 ft wide. If it were closed, the detour would be 100 mi (161 km).

CarriesCoburn Ave
CrossesWebb River
Location0.4 MI W Rt 142
RouteCity Street 0
StateMaine
Coordinates44.54344, -70.45984
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
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 within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating43.2 US tons
Inventory rating33.2 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length94 ft (28.7 m)
Longest span90 ft (27.4 m)
Deck width14 ft (4.3 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic231 (2016)
Projected traffic370 by 2036
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed100 mi (161 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Coburn Ave over Webb River built?

It was built in 2008, making it 17 years old in 2025.

What condition is Coburn Ave over Webb 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 Coburn Ave over Webb River carry?

About 231 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Coburn Ave over Webb River?

The structure is 94 ft (28.7 m) long with a longest span of 90 ft (27.4 m) and a deck 14 ft wide.

Who owns Coburn Ave over Webb River?

It is owned by the Town or Township Highway Agency.