US Bridges

I 35 Fly over Ramp over I 35 & US 30

Good

Story County, Iowa · I-35 to US 30 Interchange · Structure no. 000000000700825

Built
2019
6 years old
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,699 ft
7 main spans
Daily traffic
7,700
2022 count
Owner
State
State Highway Agency

About this bridge

I 35 Fly over Ramp over I 35 & US 30 is a steel continuous stringer/multi-beam or girder carrying I 35 Fly over Ramp over I 35 & US 30 in Story County, Iowa. It was built in 2019, so it is 6 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 7,700 vehicles a day, roughly 9% of them trucks, projected to reach 7,700 by 2044. The structure is 1,699 ft (517.9 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI 35 Fly over Ramp
CrossesI 35 & US 30
LocationI-35 to US 30 Interchange
RouteInterstate 35
StateIowa
Coordinates42.00501, -93.57025
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.5 US tons
Inventory rating40.3 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHL 93
Structure length1,699 ft (517.9 m)
Longest span271 ft (82.6 m)
Deck width40 ft (12.1 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,700 (2022)
Projected traffic7,700 by 2044
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 I 35 Fly over Ramp over I 35 & US 30 built?

It was built in 2019, making it 6 years old in 2025.

What condition is I 35 Fly over Ramp over I 35 & US 30 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 April 2024.

How much traffic does I 35 Fly over Ramp over I 35 & US 30 carry?

About 7,700 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is I 35 Fly over Ramp over I 35 & US 30?

The structure is 1,699 ft (517.9 m) long with a longest span of 271 ft (82.6 m) and a deck 40 ft wide.

Who owns I 35 Fly over Ramp over I 35 & US 30?

It is owned by the State Highway Agency.