US Bridges

Ia 2 over Rock Creek

Fair

Van Buren County, Iowa · 1.2 Mi. W of Iowa 81 · Structure no. 000000000050250

Built
1925
100 years old, rebuilt 1968
Condition
Fair
inspected November 2023
Type
Arch - Deck
Concrete
Length
50 ft
1 main span
Daily traffic
1,340
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 2 over Rock Creek is a concrete arch - deck carrying Ia 2 over Rock Creek in Van Buren County, Iowa. It was built in 1925 and reconstructed in 1968, so it is 100 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 1,340 vehicles a day, roughly 17% of them trucks, projected to reach 1,340 by 2043. The structure is 50 ft (15.2 m) long and 46 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

Location

Open in Google Maps
CarriesIa 2
CrossesRock Creek
Location1.2 Mi. W of Iowa 81
RouteState Highway 2
CountyVan Buren County
StateIowa
Coordinates40.64397, -91.77156
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.9 US tons
Inventory rating36 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span50 ft (15.2 m)
Deck width46 ft (14 m)
Roadway width44 ft (13.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,340 (2022)
Projected traffic1,340 by 2043
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.1 mi (34 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ia 2 over Rock Creek built?

It was built in 1925, making it 100 years old in 2025. It was reconstructed in 1968.

What condition is Ia 2 over Rock 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 2023.

How much traffic does Ia 2 over Rock Creek carry?

About 1,340 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is Ia 2 over Rock Creek?

The structure is 50 ft (15.2 m) long with a longest span of 50 ft (15.2 m) and a deck 46 ft wide.

Who owns Ia 2 over Rock Creek?

It is owned by the State Highway Agency.