US Bridges

WB US 20 over Over Abandon RR

Fair

Woodbury County, Iowa · 0.1 MI E of SR D25 · Structure no. 000000000603780

Built
1978
47 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
190 ft
3 main spans
Daily traffic
12,750
2022 count
Owner
State
State Highway Agency

About this bridge

WB US 20 over Over Abandon RR is a prestressed concrete stringer/multi-beam or girder carrying WB US 20 over Over Abandon RR 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 12,750 vehicles a day, roughly 14% of them trucks, projected to reach 12,750 by 2043. The structure is 190 ft (57.9 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesWB US 20
CrossesOver Abandon RR
Location0.1 MI E of SR D25
RouteU.S. Route 20
CountyWoodbury County
StateIowa
Coordinates42.46169, -96.32558
Functional classUrban Other Principal 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating80.1 US tons
Inventory rating52.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length190 ft (57.9 m)
Longest span71 ft (21.6 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,750 (2022)
Projected traffic12,750 by 2043
Trucks14%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
Detour if closed1.2 mi (2 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was WB US 20 over Over Abandon RR built?

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

What condition is WB US 20 over Over Abandon RR 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 2023.

How much traffic does WB US 20 over Over Abandon RR carry?

About 12,750 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is WB US 20 over Over Abandon RR?

The structure is 190 ft (57.9 m) long with a longest span of 71 ft (21.6 m) and a deck 43 ft wide.

Who owns WB US 20 over Over Abandon RR?

It is owned by the State Highway Agency.