US Bridges

Ia 92 over Monkey Run Creek

Fair

Louisa County, Iowa · 3.0 Mi. W of Jct. Ia 70 · Structure no. 000000000034091

Built
1984
41 years old
Condition
Fair
inspected February 2024
Type
Culvert
Concrete Continuous
Length
47 ft
3 main spans
Daily traffic
4,240
2023 count
Owner
State
State Highway Agency

About this bridge

Ia 92 over Monkey Run Creek is a concrete continuous culvert carrying Ia 92 over Monkey Run Creek in Louisa County, Iowa. It was built in 1984, so it is 41 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 4,240 vehicles a day, roughly 20% of them trucks, projected to reach 4,240 by 2043. The structure is 47 ft (14.3 m) long. If it were closed, the detour would be 3.7 mi (6 km).

CarriesIa 92
CrossesMonkey Run Creek
Location3.0 Mi. W of Jct. Ia 70
RouteState Highway 92
StateIowa
Coordinates41.28306, -91.4124
Functional classRural Principal Arterial - Other

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
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 rating53.9 US tons
Inventory rating41.4 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length47 ft (14.3 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,240 (2023)
Projected traffic4,240 by 2043
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ia 92 over Monkey Run Creek built?

It was built in 1984, making it 41 years old in 2025.

What condition is Ia 92 over Monkey Run 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 February 2024.

How much traffic does Ia 92 over Monkey Run Creek carry?

About 4,240 vehicles per day (2023 count), of which roughly 20% are trucks.

How long is Ia 92 over Monkey Run Creek?

The structure is 47 ft (14.3 m) long with a longest span of 10 ft (3 m).

Who owns Ia 92 over Monkey Run Creek?

It is owned by the State Highway Agency.