US Bridges

US 63 over UP RR

Fair

Mahaska County, Iowa · 0.1 Miles N of JCT Ia 146 · Structure no. 000000000034921

Built
1985
40 years old
Condition
Fair
inspected March 2024
Type
Slab
Concrete Continuous
Length
153 ft
3 main spans
Daily traffic
2,170
2022 count
Owner
State
State Highway Agency

About this bridge

US 63 over UP RR is a concrete continuous slab carrying US 63 over UP RR in Mahaska County, Iowa. It was built in 1985, so it is 40 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 2,170 vehicles a day, roughly 21% of them trucks, projected to reach 2,170 by 2042. The structure is 153 ft (46.6 m) long and 47 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesUS 63
CrossesUP RR
Location0.1 Miles N of JCT Ia 146
RouteU.S. Route 63
CountyMahaska County
StateIowa
Coordinates41.4697, -92.64797
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating89.9 US tons
Inventory rating54 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length153 ft (46.6 m)
Longest span59 ft (18 m)
Deck width47 ft (14.3 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,170 (2022)
Projected traffic2,170 by 2042
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed9.9 mi (16 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 63 over UP RR built?

It was built in 1985, making it 40 years old in 2025.

What condition is US 63 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 March 2024.

How much traffic does US 63 over UP RR carry?

About 2,170 vehicles per day (2022 count), of which roughly 21% are trucks.

How long is US 63 over UP RR?

The structure is 153 ft (46.6 m) long with a longest span of 59 ft (18 m) and a deck 47 ft wide.

Who owns US 63 over UP RR?

It is owned by the State Highway Agency.