US Bridges

Stoney Point RD over US 30 & US 218

Good

Linn County, Iowa · 0.8 Mi. W of Jct. US 151 · Structure no. 000000000605680

Built
1985
40 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
282 ft
4 main spans
Daily traffic
3,596
2022 count
Owner
State
State Highway Agency

About this bridge

Stoney Point RD over US 30 & US 218 is a prestressed concrete stringer/multi-beam or girder carrying Stoney Point RD over US 30 & US 218 in Linn County, Iowa. It was built in 1985, so it is 40 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 3,596 vehicles a day, roughly 1% of them trucks, projected to reach 3,596 by 2042. The structure is 282 ft (86 m) long and 39 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesStoney Point RD
CrossesUS 30 & US 218
Location0.8 Mi. W of Jct. US 151
RouteCity Street 0
CountyLinn County
StateIowa
Coordinates41.94883, -91.75558
Functional classUrban Minor 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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating99.8 US tons
Inventory rating50.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length282 ft (86 m)
Longest span91 ft (27.7 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (10.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,596 (2022)
Projected traffic3,596 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

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 Stoney Point RD over US 30 & US 218 built?

It was built in 1985, making it 40 years old in 2025.

What condition is Stoney Point RD over US 30 & US 218 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 April 2023.

How much traffic does Stoney Point RD over US 30 & US 218 carry?

About 3,596 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Stoney Point RD over US 30 & US 218?

The structure is 282 ft (86 m) long with a longest span of 91 ft (27.7 m) and a deck 39 ft wide.

Who owns Stoney Point RD over US 30 & US 218?

It is owned by the State Highway Agency.