US Bridges

US 30 & US 218 over Mud Creek

Fair

Benton County, Iowa · 0.9 Mi. W of Jct. SR W14 · Structure no. 000000000014281

Built
2000
25 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
75 ft
1 main span
Daily traffic
4,750
2022 count
Owner
State
State Highway Agency

About this bridge

US 30 & US 218 over Mud Creek is a prestressed concrete stringer/multi-beam or girder carrying US 30 & US 218 over Mud Creek in Benton County, Iowa. It was built in 2000, so it is 25 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 5 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 4,750 vehicles a day, roughly 21% of them trucks, projected to reach 4,750 by 2042. The structure is 75 ft (22.9 m) long and 43 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesUS 30 & US 218
CrossesMud Creek
Location0.9 Mi. W of Jct. SR W14
RouteU.S. Route 30
CountyBenton County
StateIowa
Coordinates41.96356, -91.98674
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81 US tons
Inventory rating43.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length75 ft (22.9 m)
Longest span72 ft (21.9 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,750 (2022)
Projected traffic4,750 by 2042
Trucks21%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 US 30 & US 218 over Mud Creek built?

It was built in 2000, making it 25 years old in 2025.

What condition is US 30 & US 218 over Mud 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 April 2023.

How much traffic does US 30 & US 218 over Mud Creek carry?

About 4,750 vehicles per day (2022 count), of which roughly 21% are trucks.

How long is US 30 & US 218 over Mud Creek?

The structure is 75 ft (22.9 m) long with a longest span of 72 ft (21.9 m) and a deck 43 ft wide.

Who owns US 30 & US 218 over Mud Creek?

It is owned by the State Highway Agency.