US Bridges

US 169 over North Raccoon River

Fair

Dallas County, Iowa · 1.4 Mi. N of Jct. US 6 · Structure no. 000000000021900

Built
1972
53 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
506 ft
5 main spans
Daily traffic
4,760
2022 count
Owner
State
State Highway Agency

About this bridge

US 169 over North Raccoon River is a steel continuous stringer/multi-beam or girder carrying US 169 over North Raccoon River in Dallas County, Iowa. It was built in 1972, so it is 53 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 4,760 vehicles a day, roughly 9% of them trucks, projected to reach 4,760 by 2043. The structure is 506 ft (154.2 m) long and 48 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesUS 169
CrossesNorth Raccoon River
Location1.4 Mi. N of Jct. US 6
RouteU.S. Route 169
StateIowa
Coordinates41.63403, -94.02109
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 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 alignment8: Equal to present desirable criteria
Operating rating71 US tons
Inventory rating42.5 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length506 ft (154.2 m)
Longest span150 ft (45.7 m)
Deck width48 ft (14.6 m)
Roadway width44 ft (13.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,760 (2022)
Projected traffic4,760 by 2043
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 North Raccoon River built?

It was built in 1972, making it 53 years old in 2025.

What condition is US 169 over North Raccoon River 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 May 2023.

How much traffic does US 169 over North Raccoon River carry?

About 4,760 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is US 169 over North Raccoon River?

The structure is 506 ft (154.2 m) long with a longest span of 150 ft (45.7 m) and a deck 48 ft wide.

Who owns US 169 over North Raccoon River?

It is owned by the State Highway Agency.