US Bridges

EB US 20 over Over Cc RR

Fair

Delaware County, Iowa · 0.9 Mi. E of Jct. Ia 13 · Structure no. 000000000602000

Built
1971
54 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
171 ft
3 main spans
Daily traffic
3,850
2022 count
Owner
State
State Highway Agency

About this bridge

EB US 20 over Over Cc RR is a prestressed concrete stringer/multi-beam or girder carrying EB US 20 over Over Cc RR in Delaware County, Iowa. It was built in 1971, so it is 54 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 3,850 vehicles a day, roughly 31% of them trucks, projected to reach 3,850 by 2044. The structure is 171 ft (52.1 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
CrossesOver Cc RR
Location0.9 Mi. E of Jct. Ia 13
RouteU.S. Route 20
CountyDelaware County
StateIowa
Coordinates42.46706, -91.46322
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 inspectionApril 2024
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 US tons
Inventory rating33.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length171 ft (52.1 m)
Longest span57 ft (17.4 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,850 (2022)
Projected traffic3,850 by 2044
Trucks31%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
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 Over Cc RR built?

It was built in 1971, making it 54 years old in 2025.

What condition is EB US 20 over Over Cc 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 April 2024.

How much traffic does EB US 20 over Over Cc RR carry?

About 3,850 vehicles per day (2022 count), of which roughly 31% are trucks.

How long is EB US 20 over Over Cc RR?

The structure is 171 ft (52.1 m) long with a longest span of 57 ft (17.4 m) and a deck 43 ft wide.

Who owns EB US 20 over Over Cc RR?

It is owned by the State Highway Agency.