US Bridges

US 169 over UP RR

Fair

Boone County, Iowa · 0.2 Mile N of N JCT US 30 · Structure no. 000000000015271

Built
1984
41 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
179 ft
3 main spans
Daily traffic
1,890
2022 count
Owner
State
State Highway Agency

About this bridge

US 169 over UP RR is a prestressed concrete stringer/multi-beam or girder carrying US 169 over UP RR in Boone County, Iowa. It was built in 1984, so it is 41 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 1,890 vehicles a day, roughly 11% of them trucks, projected to reach 1,890 by 2044. The structure is 179 ft (54.6 m) long and 43 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesUS 169
CrossesUP RR
Location0.2 Mile N of N JCT US 30
RouteU.S. Route 169
CountyBoone County
StateIowa
Coordinates42.03686, -94.10601
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating81.7 US tons
Inventory rating48.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length179 ft (54.6 m)
Longest span65 ft (19.8 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,890 (2022)
Projected traffic1,890 by 2044
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed8.7 mi (14 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 169 over UP RR built?

It was built in 1984, making it 41 years old in 2025.

What condition is US 169 over UP RR 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 2024.

How much traffic does US 169 over UP RR carry?

About 1,890 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is US 169 over UP RR?

The structure is 179 ft (54.6 m) long with a longest span of 65 ft (19.8 m) and a deck 43 ft wide.

Who owns US 169 over UP RR?

It is owned by the State Highway Agency.