US Bridges

CO RD B30 over Over Ianr RR

FairPosted for load

Cerro Gordo County, Iowa · 096191205 · Structure no. 000000000018850

Built
1955
70 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
232 ft
3 main spans
Daily traffic
2,750
2022 count
Owner
County
County Highway Agency

About this bridge

CO RD B30 over Over Ianr RR is a steel continuous stringer/multi-beam or girder carrying CO RD B30 over Over Ianr RR in Cerro Gordo County, Iowa. It was built in 1955, so it is 70 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 2,750 vehicles a day, projected to reach 2,750 by 2044. The structure is 232 ft (70.7 m) long and 34 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCO RD B30
CrossesOver Ianr RR
Location096191205
RouteCounty Highway 0
CountyCerro Gordo County
StateIowa
Coordinates43.14715, -93.02994
Functional classRural Major Collector

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating33.1 US tons
Inventory rating17.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length232 ft (70.7 m)
Longest span88 ft (26.8 m)
Deck width34 ft (10.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,750 (2022)
Projected traffic2,750 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was CO RD B30 over Over Ianr RR built?

It was built in 1955, making it 70 years old in 2025.

What condition is CO RD B30 over Over Ianr 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 CO RD B30 over Over Ianr RR carry?

About 2,750 vehicles per day (2022 count).

How long is CO RD B30 over Over Ianr RR?

The structure is 232 ft (70.7 m) long with a longest span of 88 ft (26.8 m) and a deck 34 ft wide.

Who owns CO RD B30 over Over Ianr RR?

It is owned by the County Highway Agency.