US Bridges

WB 15th Ave over Over UP RR & Street

Fair

Linn County, Iowa · 000000000 · Structure no. 000000000605010

Built
1983
42 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
698 ft
9 main spans
Daily traffic
6,454
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

WB 15th Ave over Over UP RR & Street is a prestressed concrete stringer/multi-beam or girder carrying WB 15th Ave over Over UP RR & Street in Linn County, Iowa. It was built in 1983, so it is 42 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 6,454 vehicles a day, roughly 3% of them trucks, projected to reach 6,454 by 2043. The structure is 698 ft (212.8 m) long and 39 ft wide.

Location

Open in Google Maps
CarriesWB 15th Ave
CrossesOver UP RR & Street
Location000000000
RouteCity Street 0
CountyLinn County
StateIowa
Coordinates41.96205, -91.68876
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating53.2 US tons
Inventory rating32 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20 + Mod
Structure length698 ft (212.8 m)
Longest span92 ft (28 m)
Deck width39 ft (11.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,454 (2021)
Projected traffic6,454 by 2043
Trucks3%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was WB 15th Ave over Over UP RR & Street built?

It was built in 1983, making it 42 years old in 2025.

What condition is WB 15th Ave over Over UP RR & Street 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 April 2023.

How much traffic does WB 15th Ave over Over UP RR & Street carry?

About 6,454 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is WB 15th Ave over Over UP RR & Street?

The structure is 698 ft (212.8 m) long with a longest span of 92 ft (28 m) and a deck 39 ft wide.

Who owns WB 15th Ave over Over UP RR & Street?

It is owned by the City or Municipal Highway Agency.