US Bridges

Local Sec RD over Grass Waterway

Fair

O'Brien County, Iowa · 095421701 · Structure no. 000000000260500

Built
1900
125 years old, rebuilt 1941
Condition
Fair
inspected July 2023
Type
Culvert
Concrete Continuous
Length
20 ft
2 main spans
Daily traffic
26
2022 count
Owner
County
County Highway Agency

About this bridge

Local Sec RD over Grass Waterway is a concrete continuous culvert carrying Local Sec RD over Grass Waterway in O'Brien County, Iowa. It was built in 1900 and reconstructed in 1941, so it is 125 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 26 vehicles a day, projected to reach 26 by 2043. The structure is 20 ft (6.1 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesLocal Sec RD
CrossesGrass Waterway
Location095421701
RouteCounty Highway 0
CountyO'Brien County
StateIowa
Coordinates43.05514, -95.82539
Functional classRural Local

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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadUnknown
Structure length20 ft (6.1 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26 (2022)
Projected traffic26 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$50,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Local Sec RD over Grass Waterway built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1941.

What condition is Local Sec RD over Grass Waterway 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 July 2023.

How much traffic does Local Sec RD over Grass Waterway carry?

About 26 vehicles per day (2022 count).

How long is Local Sec RD over Grass Waterway?

The structure is 20 ft (6.1 m) long with a longest span of 11 ft (3.4 m).

Who owns Local Sec RD over Grass Waterway?

It is owned by the County Highway Agency.