US Bridges

Local Sec RD over Willow CR

Poor

O'Brien County, Iowa · 094400203 · Structure no. 000000000258760

Built
1919
106 years old
Condition
Poor
inspected June 2023
Type
Slab
Concrete
Length
21 ft
1 main span
Daily traffic
26
2022 count
Owner
County
County Highway Agency

About this bridge

Local Sec RD over Willow CR is a concrete slab carrying Local Sec RD over Willow CR in O'Brien County, Iowa. It was built in 1919, so it is 106 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 26 vehicles a day, projected to reach 26 by 2043. The structure is 21 ft (6.4 m) long and 20 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesLocal Sec RD
CrossesWillow CR
Location094400203
RouteCounty Highway 0
CountyO'Brien County
StateIowa
Coordinates42.98333, -95.52998
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating55.3 US tons
Inventory rating33.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length21 ft (6.4 m)
Longest span20 ft (6.1 m)
Deck width20 ft (6.2 m)
Roadway width18 ft (5.5 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$200,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Local Sec RD over Willow CR built?

It was built in 1919, making it 106 years old in 2025.

What condition is Local Sec RD over Willow CR in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2023.

How much traffic does Local Sec RD over Willow CR carry?

About 26 vehicles per day (2022 count).

How long is Local Sec RD over Willow CR?

The structure is 21 ft (6.4 m) long with a longest span of 20 ft (6.1 m) and a deck 20 ft wide.

Who owns Local Sec RD over Willow CR?

It is owned by the County Highway Agency.