US Bridges

SB US 218 over Davis Creek

Fair

Washington County, Iowa · 4.1 Mi. S of Jct. Ia. 22 · Structure no. 000000000605580

Built
1984
41 years old
Condition
Fair
inspected February 2023
Type
Slab
Concrete Continuous
Length
133 ft
3 main spans
Daily traffic
7,600
2023 count
Owner
State
State Highway Agency

About this bridge

SB US 218 over Davis Creek is a concrete continuous slab carrying SB US 218 over Davis Creek in Washington County, Iowa. It was built in 1984, so it is 41 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 7,600 vehicles a day, roughly 19% of them trucks, projected to reach 7,600 by 2043. The structure is 133 ft (40.5 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSB US 218
CrossesDavis Creek
Location4.1 Mi. S of Jct. Ia. 22
RouteU.S. Route 218
CountyWashington County
StateIowa
Coordinates41.42997, -91.55137
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating68.3 US tons
Inventory rating39.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length133 ft (40.5 m)
Longest span51 ft (15.5 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,600 (2023)
Projected traffic7,600 by 2043
Trucks19%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SB US 218 over Davis Creek built?

It was built in 1984, making it 41 years old in 2025.

What condition is SB US 218 over Davis Creek 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 SB US 218 over Davis Creek carry?

About 7,600 vehicles per day (2023 count), of which roughly 19% are trucks.

How long is SB US 218 over Davis Creek?

The structure is 133 ft (40.5 m) long with a longest span of 51 ft (15.5 m) and a deck 47 ft wide.

Who owns SB US 218 over Davis Creek?

It is owned by the State Highway Agency.