US Bridges

30th St. over Gundlach Creek

PoorPosted for load

Fayette County, Iowa · 091082501 · Structure no. 000000000149510

Built
1959
66 years old
Condition
Poor
inspected October 2023
Type
Slab
Concrete Continuous
Length
77 ft
3 main spans
Daily traffic
11
2022 count
Owner
County
County Highway Agency

About this bridge

30th St. over Gundlach Creek is a concrete continuous slab carrying 30th St. over Gundlach Creek in Fayette County, Iowa. It was built in 1959, so it is 66 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 11 vehicles a day, projected to reach 11 by 2043. The structure is 77 ft (23.4 m) long and 23 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries30th St.
CrossesGundlach Creek
Location091082501
RouteCounty Highway 0
CountyFayette County
StateIowa
Coordinates42.67214, -91.72898
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36.9 US tons
Inventory rating22 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length77 ft (23.4 m)
Longest span29 ft (8.8 m)
Deck width23 ft (6.9 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11 (2022)
Projected traffic11 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$130,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 30th St. over Gundlach Creek built?

It was built in 1959, making it 66 years old in 2025.

What condition is 30th St. over Gundlach Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2023.

How much traffic does 30th St. over Gundlach Creek carry?

About 11 vehicles per day (2022 count).

How long is 30th St. over Gundlach Creek?

The structure is 77 ft (23.4 m) long with a longest span of 29 ft (8.8 m) and a deck 23 ft wide.

Who owns 30th St. over Gundlach Creek?

It is owned by the County Highway Agency.