US Bridges

G50 over I-35

Fair

Warren County, Iowa · 4.7 Mi. S of Jct. Ia 92 · Structure no. 000000000051190

Built
1958
67 years old
Condition
Fair
inspected April 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
202 ft
4 main spans
Daily traffic
2,262
2022 count
Owner
State
State Highway Agency

About this bridge

G50 over I-35 is a prestressed concrete stringer/multi-beam or girder carrying G50 over I-35 in Warren County, Iowa. It was built in 1958, so it is 67 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 2,262 vehicles a day, roughly 8% of them trucks, projected to reach 2,262 by 2042. The structure is 202 ft (61.6 m) long and 33 ft wide.

Location

Open in Google Maps
CarriesG50
CrossesI-35
Location4.7 Mi. S of Jct. Ia 92
RouteCounty Highway 0
CountyWarren County
StateIowa
Coordinates41.29345, -93.78026
Functional classRural Major Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2022
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 alignment6: Equal to present minimum criteria
Operating rating57.8 US tons
Inventory rating22.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length202 ft (61.6 m)
Longest span56 ft (17.1 m)
Deck width33 ft (10.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,262 (2022)
Projected traffic2,262 by 2042
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemNo

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 G50 over I-35 built?

It was built in 1958, making it 67 years old in 2025.

What condition is G50 over I-35 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 April 2022.

How much traffic does G50 over I-35 carry?

About 2,262 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is G50 over I-35?

The structure is 202 ft (61.6 m) long with a longest span of 56 ft (17.1 m) and a deck 33 ft wide.

Who owns G50 over I-35?

It is owned by the State Highway Agency.