US Bridges

US 169 over N Raccoon River Overflow

Fair

Dallas County, Iowa · 0.6 Mi. N of Jct. US 6 · Structure no. 000000000021891

Built
1994
31 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
188 ft
3 main spans
Daily traffic
4,720
2022 count
Owner
State
State Highway Agency

About this bridge

US 169 over N Raccoon River Overflow is a prestressed concrete stringer/multi-beam or girder carrying US 169 over N Raccoon River Overflow in Dallas County, Iowa. It was built in 1994, so it is 31 years old, younger 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 4,720 vehicles a day, roughly 9% of them trucks, projected to reach 4,720 by 2042. The structure is 188 ft (57.3 m) long and 43 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesUS 169
CrossesN Raccoon River Overflow
Location0.6 Mi. N of Jct. US 6
RouteU.S. Route 169
CountyDallas County
StateIowa
Coordinates41.62308, -94.01753
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating90.2 US tons
Inventory rating54.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length188 ft (57.3 m)
Longest span69 ft (21 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,720 (2022)
Projected traffic4,720 by 2042
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 US 169 over N Raccoon River Overflow built?

It was built in 1994, making it 31 years old in 2025.

What condition is US 169 over N Raccoon River Overflow 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 2023.

How much traffic does US 169 over N Raccoon River Overflow carry?

About 4,720 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is US 169 over N Raccoon River Overflow?

The structure is 188 ft (57.3 m) long with a longest span of 69 ft (21 m) and a deck 43 ft wide.

Who owns US 169 over N Raccoon River Overflow?

It is owned by the State Highway Agency.