US Bridges

NB US 218 over Cp RR

Fair

Washington County, Iowa · 0.2 Mi. N of Jct. Ia 92 · Structure no. 000000000606865

Built
1996
29 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
192 ft
3 main spans
Daily traffic
5,500
2022 count
Owner
State
State Highway Agency

About this bridge

NB US 218 over Cp RR is a prestressed concrete stringer/multi-beam or girder carrying NB US 218 over Cp RR in Washington County, Iowa. It was built in 1996, so it is 29 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 5,500 vehicles a day, roughly 23% of them trucks, projected to reach 5,500 by 2044. The structure is 192 ft (58.5 m) long and 51 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNB US 218
CrossesCp RR
Location0.2 Mi. N of Jct. Ia 92
RouteU.S. Route 218
CountyWashington County
StateIowa
Coordinates41.2934, -91.53416
Functional classRural Principal Arterial - Other

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.
Substructure8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.4 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length192 ft (58.5 m)
Longest span61 ft (18.6 m)
Deck width51 ft (15.6 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,500 (2022)
Projected traffic5,500 by 2044
Trucks23%
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 Cp RR built?

It was built in 1996, making it 29 years old in 2025.

What condition is NB US 218 over Cp 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 February 2024.

How much traffic does NB US 218 over Cp RR carry?

About 5,500 vehicles per day (2022 count), of which roughly 23% are trucks.

How long is NB US 218 over Cp RR?

The structure is 192 ft (58.5 m) long with a longest span of 61 ft (18.6 m) and a deck 51 ft wide.

Who owns NB US 218 over Cp RR?

It is owned by the State Highway Agency.