US Bridges

Oak Avenue over Middle Mill Creek

Fair

Page County, Iowa · 067371713 · Structure no. 000000000264451

Built
1989
36 years old
Condition
Fair
inspected October 2022
Type
Culvert
Concrete Continuous
Length
29 ft
2 main spans
Daily traffic
29
2022 count
Owner
County
County Highway Agency

About this bridge

Oak Avenue over Middle Mill Creek is a concrete continuous culvert carrying Oak Avenue over Middle Mill Creek in Page County, Iowa. It was built in 1989, so it is 36 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 29 vehicles a day, projected to reach 29 by 2042. The structure is 29 ft (8.8 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesOak Avenue
CrossesMiddle Mill Creek
Location067371713
RouteCounty Highway 0
StateIowa
Coordinates40.61039, -95.10807
Functional classRural Minor Collector

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 inspectionOctober 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length29 ft (8.8 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29 (2022)
Projected traffic29 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Oak Avenue over Middle Mill Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is Oak Avenue over Middle Mill 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 October 2022.

How much traffic does Oak Avenue over Middle Mill Creek carry?

About 29 vehicles per day (2022 count).

How long is Oak Avenue over Middle Mill Creek?

The structure is 29 ft (8.8 m) long with a longest span of 14 ft (4.3 m).

Who owns Oak Avenue over Middle Mill Creek?

It is owned by the County Highway Agency.