US Bridges

Main ST over Over UP RR

PoorPosted for load

Marion County, Iowa · 074211104 · Structure no. 000000000002855

Built
1940
85 years old
Condition
Poor
inspected December 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
106 ft
7 main spans
Daily traffic
1,210
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Main ST over Over UP RR is a wood or timber stringer/multi-beam or girder carrying Main ST over Over UP RR in Marion County, Iowa. It was built in 1940, so it is 85 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 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. Its operating status is: posted for load restriction.

It carries about 1,210 vehicles a day, projected to reach 1,210 by 2043. The structure is 106 ft (32.3 m) long and 29 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesMain ST
CrossesOver UP RR
Location074211104
RouteCity Street 0
CountyMarion County
StateIowa
Coordinates41.23317, -93.24354
Functional classRural Major Collector

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.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionDecember 2023
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating17 US tons
Inventory rating12.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans7
Design loadUnknown
Structure length106 ft (32.3 m)
Longest span19 ft (5.8 m)
Deck width29 ft (8.8 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,210 (2022)
Projected traffic1,210 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed5 mi (8 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$1.5 million (2023 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Main ST over Over UP RR built?

It was built in 1940, making it 85 years old in 2025.

What condition is Main ST over Over UP RR 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 December 2023.

How much traffic does Main ST over Over UP RR carry?

About 1,210 vehicles per day (2022 count).

How long is Main ST over Over UP RR?

The structure is 106 ft (32.3 m) long with a longest span of 19 ft (5.8 m) and a deck 29 ft wide.

Who owns Main ST over Over UP RR?

It is owned by the City or Municipal Highway Agency.