US Bridges

30th ST over Drainage Ditch No 13

Good

Franklin County, Iowa · 90203301 · Structure no. 000000000156551

Built
2021
4 years old
Condition
Good
inspected June 2024
Type
Culvert
Concrete Continuous
Length
29 ft
2 main spans
Daily traffic
29
2022 count
Owner
County
County Highway Agency

About this bridge

30th ST over Drainage Ditch No 13 is a concrete continuous culvert carrying 30th ST over Drainage Ditch No 13 in Franklin County, Iowa. It was built in 2021, so it is 4 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 29 vehicles a day, projected to reach 29 by 2044. The structure is 29 ft (8.8 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries30th ST
CrossesDrainage Ditch No 13
Location90203301
RouteCounty Highway 0
CountyFranklin County
StateIowa
Coordinates42.57161, -93.20914
Functional classRural Local

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 protection8 Very GoodNo problems noted.
Culvert9 ExcellentNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHL 93
Structure length29 ft (8.8 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29 (2022)
Projected traffic29 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 30th ST over Drainage Ditch No 13 built?

It was built in 2021, making it 4 years old in 2025.

What condition is 30th ST over Drainage Ditch No 13 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 June 2024.

How much traffic does 30th ST over Drainage Ditch No 13 carry?

About 29 vehicles per day (2022 count).

How long is 30th ST over Drainage Ditch No 13?

The structure is 29 ft (8.8 m) long with a longest span of 14 ft (4.3 m).

Who owns 30th ST over Drainage Ditch No 13?

It is owned by the County Highway Agency.