US Bridges

WB US 30 over Pleasant Run

Fair

Linn County, Iowa · 1.8 Mi. W of JCT US 151 · Structure no. 000000000033462

Built
1975
50 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
159 ft
3 main spans
Daily traffic
11,750
2022 count
Owner
State
State Highway Agency

About this bridge

WB US 30 over Pleasant Run is a prestressed concrete stringer/multi-beam or girder carrying WB US 30 over Pleasant Run in Linn County, Iowa. It was built in 1975, so it is 50 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 11,750 vehicles a day, roughly 13% of them trucks, projected to reach 11,750 by 2042. The structure is 159 ft (48.5 m) long and 44 ft wide.

Location

Open in Google Maps
CarriesWB US 30
CrossesPleasant Run
Location1.8 Mi. W of JCT US 151
RouteU.S. Route 30
CountyLinn County
StateIowa
Coordinates41.92547, -91.57652
Functional classUrban Other Principal 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.2 US tons
Inventory rating51.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length159 ft (48.5 m)
Longest span61 ft (18.6 m)
Deck width44 ft (13.3 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,750 (2022)
Projected traffic11,750 by 2042
Trucks13%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 WB US 30 over Pleasant Run built?

It was built in 1975, making it 50 years old in 2025.

What condition is WB US 30 over Pleasant Run 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 May 2023.

How much traffic does WB US 30 over Pleasant Run carry?

About 11,750 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is WB US 30 over Pleasant Run?

The structure is 159 ft (48.5 m) long with a longest span of 61 ft (18.6 m) and a deck 44 ft wide.

Who owns WB US 30 over Pleasant Run?

It is owned by the State Highway Agency.