US Bridges

Ia 210 over Calamus Creek

Fair

Story County, Iowa · 0.9 Mile W of JCT SR S27 · Structure no. 000000000049040

Built
1954
71 years old
Condition
Fair
inspected November 2024
Type
Slab
Concrete Continuous
Length
128 ft
3 main spans
Daily traffic
1,920
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 210 over Calamus Creek is a concrete continuous slab carrying Ia 210 over Calamus Creek in Story County, Iowa. It was built in 1954, so it is 71 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.

It carries about 1,920 vehicles a day, roughly 5% of them trucks, projected to reach 1,920 by 2044. The structure is 128 ft (39 m) long and 33 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesIa 210
CrossesCalamus Creek
Location0.9 Mile W of JCT SR S27
RouteState Highway 210
CountyStory County
StateIowa
Coordinates41.8777, -93.42284
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionNovember 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.8 US tons
Inventory rating34.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length128 ft (39 m)
Longest span48 ft (14.6 m)
Deck width33 ft (10 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,920 (2022)
Projected traffic1,920 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Calamus Creek built?

It was built in 1954, making it 71 years old in 2025.

What condition is Ia 210 over Calamus 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 November 2024.

How much traffic does Ia 210 over Calamus Creek carry?

About 1,920 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Ia 210 over Calamus Creek?

The structure is 128 ft (39 m) long with a longest span of 48 ft (14.6 m) and a deck 33 ft wide.

Who owns Ia 210 over Calamus Creek?

It is owned by the State Highway Agency.