US Bridges

W 4th ST over I-80

Fair

Jasper County, Iowa · 1.0 Mile E of JCT Ia 14 · Structure no. 000000000031110

Built
1962
63 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
218 ft
4 main spans
Daily traffic
790
2022 count
Owner
State
State Highway Agency

About this bridge

W 4th ST over I-80 is a prestressed concrete stringer/multi-beam or girder carrying W 4th ST over I-80 in Jasper County, Iowa. It was built in 1962, so it is 63 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 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 790 vehicles a day, projected to reach 790 by 2043. The structure is 218 ft (66.4 m) long and 29 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesW 4th ST
CrossesI-80
Location1.0 Mile E of JCT Ia 14
RouteCity Street 0
CountyJasper County
StateIowa
Coordinates41.68351, -93.05834
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
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 rating47.4 US tons
Inventory rating10.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length218 ft (66.4 m)
Longest span65 ft (19.8 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic790 (2022)
Projected traffic790 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 km)
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 W 4th ST over I-80 built?

It was built in 1962, making it 63 years old in 2025.

What condition is W 4th ST over I-80 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 December 2023.

How much traffic does W 4th ST over I-80 carry?

About 790 vehicles per day (2022 count).

How long is W 4th ST over I-80?

The structure is 218 ft (66.4 m) long with a longest span of 65 ft (19.8 m) and a deck 29 ft wide.

Who owns W 4th ST over I-80?

It is owned by the State Highway Agency.