US Bridges

LCL-400th ST over Indian Creek

PoorPosted for load

Mills County, Iowa · 072402602 · Structure no. 000000000245730

Built
1957
68 years old
Condition
Poor
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
87 ft
1 main span
Daily traffic
50
2022 count
Owner
County
County Highway Agency

About this bridge

LCL-400th ST over Indian Creek is a steel stringer/multi-beam or girder carrying LCL-400th ST over Indian Creek in Mills County, Iowa. It was built in 1957, so it is 68 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. Its operating status is: posted for load restriction.

It carries about 50 vehicles a day, projected to reach 50 by 2043. The structure is 87 ft (26.5 m) long and 19 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesLCL-400th ST
CrossesIndian Creek
Location072402602
RouteCounty Highway 0
StateIowa
Coordinates41.01428, -95.42267
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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating23.9 US tons
Inventory rating16.6 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1 (+2 approach)
Design loadHS 20
Structure length87 ft (26.5 m)
Longest span40 ft (12.2 m)
Deck width19 ft (5.7 m)
Roadway width18 ft (5.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2022)
Projected traffic50 by 2043
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was LCL-400th ST over Indian Creek built?

It was built in 1957, making it 68 years old in 2025.

What condition is LCL-400th ST over Indian Creek 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 March 2023.

How much traffic does LCL-400th ST over Indian Creek carry?

About 50 vehicles per day (2022 count).

How long is LCL-400th ST over Indian Creek?

The structure is 87 ft (26.5 m) long with a longest span of 40 ft (12.2 m) and a deck 19 ft wide.

Who owns LCL-400th ST over Indian Creek?

It is owned by the County Highway Agency.