US Bridges

G 30 White Pole RD over Small Stream

Fair

Cass County, Iowa · 077342203 · Structure no. 000000000017492

Built
1993
32 years old
Condition
Fair
inspected March 2024
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
1,564
2022 count
Owner
County
County Highway Agency

About this bridge

G 30 White Pole RD over Small Stream is a concrete continuous culvert carrying G 30 White Pole RD over Small Stream in Cass County, Iowa. It was built in 1993, so it is 32 years old, younger 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 1,564 vehicles a day, roughly 12% of them trucks, projected to reach 1,564 by 2044. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesG 30 White Pole RD
CrossesSmall Stream
Location077342203
RouteCounty Highway 0
CountyCass County
StateIowa
Coordinates41.45876, -94.74688
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,564 (2022)
Projected traffic1,564 by 2044
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$30,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was G 30 White Pole RD over Small Stream built?

It was built in 1993, making it 32 years old in 2025.

What condition is G 30 White Pole RD over Small Stream 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 March 2024.

How much traffic does G 30 White Pole RD over Small Stream carry?

About 1,564 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is G 30 White Pole RD over Small Stream?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns G 30 White Pole RD over Small Stream?

It is owned by the County Highway Agency.