US Bridges

Lcl-Quigg Ave over Spring Valley CR

PoorPosted for load

Mills County, Iowa · 071422605 · Structure no. 000000000245301

Built
1940
85 years old
Condition
Poor
inspected March 2023
Type
Truss - Thru
Steel
Length
72 ft
2 main spans
Daily traffic
11
2021 count
Owner
County
County Highway Agency

About this bridge

Lcl-Quigg Ave over Spring Valley CR is a steel truss - thru carrying Lcl-Quigg Ave over Spring Valley CR in Mills County, Iowa. It was built in 1940, so it is 85 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 11 vehicles a day, projected to reach 11 by 2043. The structure is 72 ft (21.9 m) long and 17 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesLcl-Quigg Ave
CrossesSpring Valley CR
Location071422605
RouteCounty Highway 0
CountyMills County
StateIowa
Coordinates40.92328, -95.63539
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating13 US tons
Inventory rating7.6 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans2
Design loadHS 20
Structure length72 ft (21.9 m)
Longest span60 ft (18.3 m)
Deck width17 ft (5.1 m)
Roadway width15 ft (4.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11 (2021)
Projected traffic11 by 2043
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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-Quigg Ave over Spring Valley CR built?

It was built in 1940, making it 85 years old in 2025.

What condition is Lcl-Quigg Ave over Spring Valley 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 March 2023.

How much traffic does Lcl-Quigg Ave over Spring Valley CR carry?

About 11 vehicles per day (2021 count).

How long is Lcl-Quigg Ave over Spring Valley CR?

The structure is 72 ft (21.9 m) long with a longest span of 60 ft (18.3 m) and a deck 17 ft wide.

Who owns Lcl-Quigg Ave over Spring Valley CR?

It is owned by the County Highway Agency.