US Bridges

Ia 14 over Wolf Creek

Fair

Grundy County, Iowa · 0.8 Miles North of SR D67 · Structure no. 000000000025830

Built
1921
104 years old, rebuilt 1956
Condition
Fair
inspected July 2024
Type
Slab
Concrete Continuous
Length
62 ft
2 main spans
Daily traffic
2,850
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 14 over Wolf Creek is a concrete continuous slab carrying Ia 14 over Wolf Creek in Grundy County, Iowa. It was built in 1921 and reconstructed in 1956, so it is 104 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 2,850 vehicles a day, roughly 17% of them trucks, projected to reach 2,850 by 2044. The structure is 62 ft (18.9 m) long and 34 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesIa 14
CrossesWolf Creek
Location0.8 Miles North of SR D67
RouteState Highway 14
CountyGrundy County
StateIowa
Coordinates42.237, -92.90457
Functional classRural Principal Arterial - Other

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 protection7 GoodSome minor problems.
Last inspectionJuly 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.7 US tons
Inventory rating26.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length62 ft (18.9 m)
Longest span30 ft (9.1 m)
Deck width34 ft (10.4 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,850 (2022)
Projected traffic2,850 by 2044
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ia 14 over Wolf Creek built?

It was built in 1921, making it 104 years old in 2025. It was reconstructed in 1956.

What condition is Ia 14 over Wolf 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 July 2024.

How much traffic does Ia 14 over Wolf Creek carry?

About 2,850 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is Ia 14 over Wolf Creek?

The structure is 62 ft (18.9 m) long with a longest span of 30 ft (9.1 m) and a deck 34 ft wide.

Who owns Ia 14 over Wolf Creek?

It is owned by the State Highway Agency.