US Bridges

EB US 20 over US 63 Sergeant RD Trail

Fair

Black Hawk County, Iowa · At Jct. US 63 · Structure no. 000000000605305

Built
1983
42 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
388 ft
6 main spans
Daily traffic
11,450
2022 count
Owner
State
State Highway Agency

About this bridge

EB US 20 over US 63 Sergeant RD Trail is a prestressed concrete stringer/multi-beam or girder carrying EB US 20 over US 63 Sergeant RD Trail in Black Hawk County, Iowa. It was built in 1983, so it is 42 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 11,450 vehicles a day, roughly 14% of them trucks, projected to reach 11,450 by 2043. The structure is 388 ft (118.3 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesEB US 20
CrossesUS 63 Sergeant RD Trail
LocationAt Jct. US 63
RouteU.S. Route 20
CountyBlack Hawk County
StateIowa
Coordinates42.45866, -92.40591
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 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 rating71.3 US tons
Inventory rating38.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length388 ft (118.3 m)
Longest span81 ft (24.7 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,450 (2022)
Projected traffic11,450 by 2043
Trucks14%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 EB US 20 over US 63 Sergeant RD Trail built?

It was built in 1983, making it 42 years old in 2025.

What condition is EB US 20 over US 63 Sergeant RD Trail 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 2023.

How much traffic does EB US 20 over US 63 Sergeant RD Trail carry?

About 11,450 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is EB US 20 over US 63 Sergeant RD Trail?

The structure is 388 ft (118.3 m) long with a longest span of 81 ft (24.7 m) and a deck 43 ft wide.

Who owns EB US 20 over US 63 Sergeant RD Trail?

It is owned by the State Highway Agency.