US Bridges

WB US 30 over Bike Path & Trail

Fair

Story County, Iowa · 1.1 MI West of JCT US 69 · Structure no. 000000000048693

Built
1971
54 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
219 ft
3 main spans
Daily traffic
15,200
2023 count
Owner
State
State Highway Agency

About this bridge

WB US 30 over Bike Path & Trail is a steel continuous stringer/multi-beam or girder carrying WB US 30 over Bike Path & Trail in Story County, Iowa. It was built in 1971, so it is 54 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 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 15,200 vehicles a day, roughly 7% of them trucks, projected to reach 15,200 by 2043. The structure is 219 ft (66.8 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 US 30
CrossesBike Path & Trail
Location1.1 MI West of JCT US 69
RouteU.S. Route 30
CountyStory County
StateIowa
Coordinates42.00357, -93.63114
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
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
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 geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.3 US tons
Inventory rating29.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length219 ft (66.8 m)
Longest span83 ft (25.3 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,200 (2023)
Projected traffic15,200 by 2043
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesPedestrian / bicycle
Detour if closed1.2 mi (2 km)
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was WB US 30 over Bike Path & Trail built?

It was built in 1971, making it 54 years old in 2025.

What condition is WB US 30 over Bike Path & Trail 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 January 2024.

How much traffic does WB US 30 over Bike Path & Trail carry?

About 15,200 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is WB US 30 over Bike Path & Trail?

The structure is 219 ft (66.8 m) long with a longest span of 83 ft (25.3 m) and a deck 43 ft wide.

Who owns WB US 30 over Bike Path & Trail?

It is owned by the State Highway Agency.