BridgeHunter.com: Astoria Belt Line Bridge

The Astoria Belt Line Bridge is a classic example of early 20th century reinforced concrete construction. The structure was completed to allow the city streets and eventual coast highway to cross over the railroad line that encircled most of Astoria.

The bridge featured many of the classic concrete construction details of the era including decorative railing, inset paneling and surface treatments. The retaining walls leading to the structure feature arched paneling providing the illusion of approach spans leading to the two main spans. The structure originally has decorative cast iron light posts attached to the rail, but these rails have since been removed.

The railroad that served the area along Youngs Bay was removed and the structure now serves as highway crossing over a local street. The structure is situated just a few yards north of the Old Youngs Bay Bridge on the US-101 business route.

Overview: Slab bridge over Belt Line on US 101 Bus. Route

Location: Astoria, Clatsop County, Oregon

Status: Open to traffic

History: Built 1921

Railroad: Port of Astoria Belt Line Railroad

Design: Slab

Dimensions

Length of largest span: 18.7 ft.

Total length: 37.7 ft.

Deck width: 24.0 ft.

Average daily traffic (as of 2016)

8,600

Inventory numbers

OR 02418 (Oregon Dept. of Transportation structure number)

BH 87142 (Bridgehunter.com ID)

BridgeReports.com: HWY 105 over BELT LINE

Latest Available Inspection: October 2017

Good/Fair/Poor Condition: Fair

Status: Open, no restriction [A]

Average daily traffic: 8,600 [as of 2016]

Truck traffic: 14% of total traffic

Deck condition: Satisfactory [6 out of 9]

Superstructure condition: Satisfactory [6 out of 9]

Substructure condition: Satisfactory [6 out of 9]

Structural appraisal: Somewhat better than minimum adequacy to tolerate being left in place as is [5]

Deck geometry appraisal: Basically intolerable requiring high priority of replacement [2]

Underclearances appraisal: Basically intolerable requiring high priority of corrective action [3]

Roadway alignment appraisal: Equal to present desirable criteria [8]

Scour condition: Bridge not over waterway. [N]

Sufficiency rating: 55.8

Recommended work: Widening of existing bridge or other major structure without deck rehabilitation or replacement [33]

Estimated cost of work: $193,000

Links

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