US Bridges

I 35 NB on Ramp over Drainage Ditch

Good

Franklin County, Iowa · 0.1 Mi. N of Jct. Iowa 3 · Structure no. 000000000700460

Built
2006
19 years old
Condition
Good
inspected October 2023
Type
Culvert
Concrete
Length
28 ft
2 main spans
Daily traffic
680
2022 count
Owner
State
State Highway Agency

About this bridge

I 35 NB on Ramp over Drainage Ditch is a concrete culvert carrying I 35 NB on Ramp over Drainage Ditch in Franklin County, Iowa. It was built in 2006, so it is 19 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 680 vehicles a day, roughly 30% of them trucks, projected to reach 680 by 2043. The structure is 28 ft (8.5 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI 35 NB on Ramp
CrossesDrainage Ditch
Location0.1 Mi. N of Jct. Iowa 3
RouteInterstate 35
StateIowa
Coordinates42.74645, -93.39488
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
Channel and channel protection9 ExcellentNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.1 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic680 (2022)
Projected traffic680 by 2043
Trucks30%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I 35 NB on Ramp over Drainage Ditch built?

It was built in 2006, making it 19 years old in 2025.

What condition is I 35 NB on Ramp over Drainage Ditch 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 October 2023.

How much traffic does I 35 NB on Ramp over Drainage Ditch carry?

About 680 vehicles per day (2022 count), of which roughly 30% are trucks.

How long is I 35 NB on Ramp over Drainage Ditch?

The structure is 28 ft (8.5 m) long with a longest span of 11 ft (3.4 m).

Who owns I 35 NB on Ramp over Drainage Ditch?

It is owned by the State Highway Agency.