US Bridges

Local-Lwc 40th over Br Staff Creek

Fair

Howard County, Iowa · 100142305 · Structure no. 000000000184021

Built
1988
37 years old
Condition
Fair
inspected April 2024
Type
Culvert
Steel
Length
24 ft
3 main spans
Daily traffic
73
2022 count
Owner
County
County Highway Agency

About this bridge

Local-Lwc 40th over Br Staff Creek is a steel culvert carrying Local-Lwc 40th over Br Staff Creek in Howard County, Iowa. It was built in 1988, so it is 37 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 73 vehicles a day, projected to reach 73 by 2044. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesLocal-Lwc 40th
CrossesBr Staff Creek
Location100142305
RouteCounty Highway 0
CountyHoward County
StateIowa
Coordinates43.45868, -92.45776
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 inspectionApril 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.6 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadUnknown
Structure length24 ft (7.3 m)
Longest span6 ft (1.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic73 (2022)
Projected traffic73 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Local-Lwc 40th over Br Staff Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is Local-Lwc 40th over Br Staff Creek 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 April 2024.

How much traffic does Local-Lwc 40th over Br Staff Creek carry?

About 73 vehicles per day (2022 count).

How long is Local-Lwc 40th over Br Staff Creek?

The structure is 24 ft (7.3 m) long with a longest span of 6 ft (1.8 m).

Who owns Local-Lwc 40th over Br Staff Creek?

It is owned by the County Highway Agency.