US Bridges

NB US 218 over Over Cedr RR

Good

Black Hawk County, Iowa · 0.8 Mi. N of Jct. Ia. 57 · Structure no. 000000000601590

Built
1995
30 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
247 ft
3 main spans
Daily traffic
11,850
2022 count
Owner
State
State Highway Agency

About this bridge

NB US 218 over Over Cedr RR is a prestressed concrete stringer/multi-beam or girder carrying NB US 218 over Over Cedr RR in Black Hawk County, Iowa. It was built in 1995, so it is 30 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 11,850 vehicles a day, roughly 11% of them trucks, projected to reach 11,850 by 2044. The structure is 247 ft (75.3 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesNB US 218
CrossesOver Cedr RR
Location0.8 Mi. N of Jct. Ia. 57
RouteU.S. Route 218
CountyBlack Hawk County
StateIowa
Coordinates42.54767, -92.42412
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionOctober 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 alignment8: Equal to present desirable criteria
Operating rating83.3 US tons
Inventory rating41.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length247 ft (75.3 m)
Longest span81 ft (24.7 m)
Deck width45 ft (13.6 m)
Roadway width41 ft (12.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,850 (2022)
Projected traffic11,850 by 2044
Trucks11%
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 NB US 218 over Over Cedr RR built?

It was built in 1995, making it 30 years old in 2025.

What condition is NB US 218 over Over Cedr RR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.

How much traffic does NB US 218 over Over Cedr RR carry?

About 11,850 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is NB US 218 over Over Cedr RR?

The structure is 247 ft (75.3 m) long with a longest span of 81 ft (24.7 m) and a deck 45 ft wide.

Who owns NB US 218 over Over Cedr RR?

It is owned by the State Highway Agency.