US Bridges

Ia 210 over Big Creek

Fair

Boone County, Iowa · 3.3 Miles E of JCT Ia 17 · Structure no. 000000000076960

Built
1937
88 years old, rebuilt 1969
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
105 ft
3 main spans
Daily traffic
2,230
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 210 over Big Creek is a steel continuous stringer/multi-beam or girder carrying Ia 210 over Big Creek in Boone County, Iowa. It was built in 1937 and reconstructed in 1969, so it is 88 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 2,230 vehicles a day, roughly 10% of them trucks, projected to reach 2,230 by 2044. The structure is 105 ft (32 m) long and 46 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesIa 210
CrossesBig Creek
Location3.3 Miles E of JCT Ia 17
RouteState Highway 210
CountyBoone County
StateIowa
Coordinates41.87797, -93.75143
Functional classRural Minor 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating40.5 US tons
Inventory rating24.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length105 ft (32 m)
Longest span40 ft (12.2 m)
Deck width46 ft (14 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,230 (2022)
Projected traffic2,230 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ia 210 over Big Creek built?

It was built in 1937, making it 88 years old in 2025. It was reconstructed in 1969.

What condition is Ia 210 over Big 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 June 2024.

How much traffic does Ia 210 over Big Creek carry?

About 2,230 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Ia 210 over Big Creek?

The structure is 105 ft (32 m) long with a longest span of 40 ft (12.2 m) and a deck 46 ft wide.

Who owns Ia 210 over Big Creek?

It is owned by the State Highway Agency.