US Bridges

NB Ia 5 & WB 92 over White Breast Creek

Fair

Marion County, Iowa · 2.7 Mi. N of Jct. Iowa 14 · Structure no. 000000000035163

Built
1978
47 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
433 ft
3 main spans
Daily traffic
4,200
2022 count
Owner
State
State Highway Agency

About this bridge

NB Ia 5 & WB 92 over White Breast Creek is a steel continuous stringer/multi-beam or girder carrying NB Ia 5 & WB 92 over White Breast Creek in Marion County, Iowa. It was built in 1978, so it is 47 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 4,200 vehicles a day, roughly 11% of them trucks, projected to reach 4,200 by 2044. The structure is 433 ft (132 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNB Ia 5 & WB 92
CrossesWhite Breast Creek
Location2.7 Mi. N of Jct. Iowa 14
RouteState Highway 5
CountyMarion County
StateIowa
Coordinates41.32226, -93.14964
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
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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
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 geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.6 US tons
Inventory rating44.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length433 ft (132 m)
Longest span166 ft (50.6 m)
Deck width44 ft (13.3 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,200 (2022)
Projected traffic4,200 by 2044
Trucks11%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 NB Ia 5 & WB 92 over White Breast Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is NB Ia 5 & WB 92 over White Breast 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 September 2024.

How much traffic does NB Ia 5 & WB 92 over White Breast Creek carry?

About 4,200 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is NB Ia 5 & WB 92 over White Breast Creek?

The structure is 433 ft (132 m) long with a longest span of 166 ft (50.6 m) and a deck 44 ft wide.

Who owns NB Ia 5 & WB 92 over White Breast Creek?

It is owned by the State Highway Agency.