US Bridges

Harmodon RD/SD11 over Drainage Ditch

Good

Minnehaha County, South Dakota · 0.3N of Lincoln CO Line · Structure no. 000000050240238

Built
2012
13 years old
Condition
Good
inspected October 2023
Type
Culvert
Concrete
Length
60 ft
5 main spans
Daily traffic
100
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Harmodon RD/SD11 over Drainage Ditch is a concrete culvert carrying Harmodon RD/SD11 over Drainage Ditch in Minnehaha County, South Dakota. It was built in 2012, so it is 13 years old, younger than the South Dakota average of 48.9 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 100 vehicles a day, roughly 2% of them trucks, projected to reach 300 by 2032. The structure is 60 ft (18.4 m) long. If it were closed, the detour would be 14.9 mi (24 km).

CarriesHarmodon RD/SD11
CrossesDrainage Ditch
Location0.3N of Lincoln CO Line
RouteCity Street 0
Coordinates43.50494, -96.65102
Functional classUrban Collector

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.
Culvert8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 48 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 alignment9: Superior to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans5
Design loadHL 93
Structure length60 ft (18.4 m)
Longest span10 ft (3.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)
Projected traffic300 by 2032
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Harmodon RD/SD11 over Drainage Ditch built?

It was built in 2012, making it 13 years old in 2025.

What condition is Harmodon RD/SD11 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 Harmodon RD/SD11 over Drainage Ditch carry?

About 100 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Harmodon RD/SD11 over Drainage Ditch?

The structure is 60 ft (18.4 m) long with a longest span of 10 ft (3.1 m).

Who owns Harmodon RD/SD11 over Drainage Ditch?

It is owned by the City or Municipal Highway Agency.