US Bridges

FAS 926 over Porterfield Creek

Good

Union County, Illinois · 3.3 MI E Dongola · Structure no. 091312700000000

Built
1978
47 years old
Condition
Good
inspected April 2021
Type
Channel Beam
Concrete
Length
117 ft
3 main spans
Daily traffic
650
2020 count
Owner
County
County Highway Agency

About this bridge

FAS 926 over Porterfield Creek is a concrete channel beam carrying FAS 926 over Porterfield Creek in Union County, Illinois. It was built in 1978, so it is 47 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 650 vehicles a day, roughly 22% of them trucks, projected to reach 657 by 2046. The structure is 117 ft (35.7 m) long and 34 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

Location

Open in Google Maps
CarriesFAS 926
CrossesPorterfield Creek
Location3.3 MI E Dongola
RouteCounty Highway 0
CountyUnion County
StateIllinois
Coordinates37.37588, -89.09972
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.2 US tons
Inventory rating37.8 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length117 ft (35.7 m)
Longest span38 ft (11.6 m)
Deck width34 ft (10.3 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic650 (2020)
Projected traffic657 by 2046
Trucks22%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was FAS 926 over Porterfield Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is FAS 926 over Porterfield Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2021.

How much traffic does FAS 926 over Porterfield Creek carry?

About 650 vehicles per day (2020 count), of which roughly 22% are trucks.

How long is FAS 926 over Porterfield Creek?

The structure is 117 ft (35.7 m) long with a longest span of 38 ft (11.6 m) and a deck 34 ft wide.

Who owns FAS 926 over Porterfield Creek?

It is owned by the County Highway Agency.