US Bridges

WB I-80 over Troublesome Creek

Good

Cass County, Iowa · 4.5 Mi. E of US 71 · Structure no. 000000000018151

Built
2003
22 years old
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
233 ft
3 main spans
Daily traffic
11,500
2022 count
Owner
State
State Highway Agency

About this bridge

WB I-80 over Troublesome Creek is a prestressed concrete stringer/multi-beam or girder carrying WB I-80 over Troublesome Creek in Cass County, Iowa. It was built in 2003, so it is 22 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 11,500 vehicles a day, roughly 42% of them trucks, projected to reach 11,500 by 2043. The structure is 233 ft (71 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesWB I-80
CrossesTroublesome Creek
Location4.5 Mi. E of US 71
RouteInterstate 80
CountyCass County
StateIowa
Coordinates41.49732, -94.85886
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.7 US tons
Inventory rating44.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length233 ft (71 m)
Longest span116 ft (35.4 m)
Deck width43 ft (13 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,500 (2022)
Projected traffic11,500 by 2043
Trucks42%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was WB I-80 over Troublesome Creek built?

It was built in 2003, making it 22 years old in 2025.

What condition is WB I-80 over Troublesome Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2023.

How much traffic does WB I-80 over Troublesome Creek carry?

About 11,500 vehicles per day (2022 count), of which roughly 42% are trucks.

How long is WB I-80 over Troublesome Creek?

The structure is 233 ft (71 m) long with a longest span of 116 ft (35.4 m) and a deck 43 ft wide.

Who owns WB I-80 over Troublesome Creek?

It is owned by the State Highway Agency.