US Bridges

SE 30th ST over UP RR

Fair

Polk County, Iowa · 078230602 · Structure no. 000000000040770

Built
1958
67 years old, rebuilt 2021
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
660 ft
9 main spans
Daily traffic
9,799
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

SE 30th ST over UP RR is a steel continuous stringer/multi-beam or girder carrying SE 30th ST over UP RR in Polk County, Iowa. It was built in 1958 and reconstructed in 2021, so it is 67 years old, older 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 6 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 9,799 vehicles a day, projected to reach 9,799 by 2043. The structure is 660 ft (201.2 m) long and 52 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSE 30th ST
CrossesUP RR
Location078230602
RouteCity Street 0
CountyPolk County
StateIowa
Coordinates41.58862, -93.55834
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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating34.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans9
Design loadHL 93
Structure length660 ft (201.2 m)
Longest span90 ft (27.4 m)
Deck width52 ft (15.8 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,799 (2022)
Projected traffic9,799 by 2043
Trucks0%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

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$4.2 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was SE 30th ST over UP RR built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2021.

What condition is SE 30th ST over UP RR 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 July 2023.

How much traffic does SE 30th ST over UP RR carry?

About 9,799 vehicles per day (2022 count).

How long is SE 30th ST over UP RR?

The structure is 660 ft (201.2 m) long with a longest span of 90 ft (27.4 m) and a deck 52 ft wide.

Who owns SE 30th ST over UP RR?

It is owned by the City or Municipal Highway Agency.