US Bridges

WB US 30 over Cic RR

Fair

Linn County, Iowa · 0.8 Mi. W of Jct. I-380 · Structure no. 000000000604190

Built
1979
46 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
305 ft
4 main spans
Daily traffic
15,000
2021 count
Owner
State
State Highway Agency

About this bridge

WB US 30 over Cic RR is a prestressed concrete stringer/multi-beam or girder carrying WB US 30 over Cic RR in Linn County, Iowa. It was built in 1979, so it is 46 years old, older 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 15,000 vehicles a day, roughly 10% of them trucks, projected to reach 15,000 by 2043. The structure is 305 ft (93 m) long and 46 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesWB US 30
CrossesCic RR
Location0.8 Mi. W of Jct. I-380
RouteU.S. Route 30
CountyLinn County
StateIowa
Coordinates41.92962, -91.6825
Functional classUrban Other Principal Arterial

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.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67 US tons
Inventory rating24.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length305 ft (93 m)
Longest span82 ft (25 m)
Deck width46 ft (13.9 m)
Roadway width43 ft (13 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,000 (2021)
Projected traffic15,000 by 2043
Trucks10%
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 WB US 30 over Cic RR built?

It was built in 1979, making it 46 years old in 2025.

What condition is WB US 30 over Cic 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 May 2023.

How much traffic does WB US 30 over Cic RR carry?

About 15,000 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is WB US 30 over Cic RR?

The structure is 305 ft (93 m) long with a longest span of 82 ft (25 m) and a deck 46 ft wide.

Who owns WB US 30 over Cic RR?

It is owned by the State Highway Agency.