US Bridges

Ia 48 over Drainage Ditch

Good

Cass County, Iowa · 0.8 Mi. N of Jct. Ia #92 · Structure no. 000000000017711

Built
1985
40 years old
Condition
Good
inspected November 2023
Type
Culvert
Concrete Continuous
Length
27 ft
2 main spans
Daily traffic
1,490
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 48 over Drainage Ditch is a concrete continuous culvert carrying Ia 48 over Drainage Ditch in Cass County, Iowa. It was built in 1985, so it is 40 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 1,490 vehicles a day, roughly 9% of them trucks, projected to reach 1,490 by 2043. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesIa 48
CrossesDrainage Ditch
Location0.8 Mi. N of Jct. Ia #92
RouteState Highway 48
CountyCass County
StateIowa
Coordinates41.24546, -95.13724
Functional classRural Minor Arterial

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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.9 US tons
Inventory rating33.2 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,490 (2022)
Projected traffic1,490 by 2043
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

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 Ia 48 over Drainage Ditch built?

It was built in 1985, making it 40 years old in 2025.

What condition is Ia 48 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 November 2023.

How much traffic does Ia 48 over Drainage Ditch carry?

About 1,490 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is Ia 48 over Drainage Ditch?

The structure is 27 ft (8.2 m) long with a longest span of 12 ft (3.7 m).

Who owns Ia 48 over Drainage Ditch?

It is owned by the State Highway Agency.