US Bridges

Morningside Ave over US 20

Fair

Woodbury County, Iowa · At Jct. SR D25 · Structure no. 000000000603760

Built
1978
47 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
280 ft
4 main spans
Daily traffic
6,217
2022 count
Owner
State
State Highway Agency

About this bridge

Morningside Ave over US 20 is a prestressed concrete stringer/multi-beam or girder carrying Morningside Ave over US 20 in Woodbury County, Iowa. It was built in 1978, so it is 47 years old, older 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 6,217 vehicles a day, roughly 2% of them trucks, projected to reach 6,217 by 2043. The structure is 280 ft (85.3 m) long and 39 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesMorningside Ave
CrossesUS 20
LocationAt Jct. SR D25
RouteCity Street 0
CountyWoodbury County
StateIowa
Coordinates42.46026, -96.3277
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating95.1 US tons
Inventory rating38.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length280 ft (85.3 m)
Longest span92 ft (28 m)
Deck width39 ft (11.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,217 (2022)
Projected traffic6,217 by 2043
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Morningside Ave over US 20 built?

It was built in 1978, making it 47 years old in 2025.

What condition is Morningside Ave over US 20 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 September 2023.

How much traffic does Morningside Ave over US 20 carry?

About 6,217 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Morningside Ave over US 20?

The structure is 280 ft (85.3 m) long with a longest span of 92 ft (28 m) and a deck 39 ft wide.

Who owns Morningside Ave over US 20?

It is owned by the State Highway Agency.