US Bridges

US 30 over Over UP RR

Fair

Clinton County, Iowa · 0.6 Mi. E of Jct. SR Y4E · Structure no. 000000000020720

Built
1955
70 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
370 ft
4 main spans
Daily traffic
2,550
2022 count
Owner
State
State Highway Agency

About this bridge

US 30 over Over UP RR is a steel continuous stringer/multi-beam or girder carrying US 30 over Over UP RR in Clinton County, Iowa. It was built in 1955, so it is 70 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 2,550 vehicles a day, roughly 21% of them trucks, projected to reach 2,550 by 2044. The structure is 370 ft (112.8 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 30
CrossesOver UP RR
Location0.6 Mi. E of Jct. SR Y4E
RouteU.S. Route 30
CountyClinton County
StateIowa
Coordinates41.82779, -90.82965
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating38.5 US tons
Inventory rating23.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length370 ft (112.8 m)
Longest span103 ft (31.4 m)
Deck width34 ft (10.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,550 (2022)
Projected traffic2,550 by 2044
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 30 over Over UP RR built?

It was built in 1955, making it 70 years old in 2025.

What condition is US 30 over 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 June 2024.

How much traffic does US 30 over Over UP RR carry?

About 2,550 vehicles per day (2022 count), of which roughly 21% are trucks.

How long is US 30 over Over UP RR?

The structure is 370 ft (112.8 m) long with a longest span of 103 ft (31.4 m) and a deck 34 ft wide.

Who owns US 30 over Over UP RR?

It is owned by the State Highway Agency.