US Bridges

Ia 48 over Drainage Ditch

Fair

Cass County, Iowa · 1.4 Mi. S of Jct. Ia 92 · Structure no. 000000000017671

Built
1974
51 years old
Condition
Fair
inspected June 2024
Type
Slab
Concrete Continuous
Length
93 ft
3 main spans
Daily traffic
1,250
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 48 over Drainage Ditch is a concrete continuous slab carrying Ia 48 over Drainage Ditch in Cass County, Iowa. It was built in 1974, so it is 51 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 6 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 1,250 vehicles a day, roughly 17% of them trucks, projected to reach 1,250 by 2044. The structure is 93 ft (28.3 m) long and 47 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesIa 48
CrossesDrainage Ditch
Location1.4 Mi. S of Jct. Ia 92
RouteState Highway 48
CountyCass County
StateIowa
Coordinates41.21701, -95.13729
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating60.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length93 ft (28.3 m)
Longest span35 ft (10.7 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,250 (2022)
Projected traffic1,250 by 2044
Trucks17%
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 1974, making it 51 years old in 2025.

What condition is Ia 48 over Drainage Ditch 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 June 2024.

How much traffic does Ia 48 over Drainage Ditch carry?

About 1,250 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is Ia 48 over Drainage Ditch?

The structure is 93 ft (28.3 m) long with a longest span of 35 ft (10.7 m) and a deck 47 ft wide.

Who owns Ia 48 over Drainage Ditch?

It is owned by the State Highway Agency.