US Bridges

FM 984 over Onion Creek

Good

Ellis County, Texas · 4.2 MI SW of SH 34 · Structure no. 180710121101009

Built
1988
37 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
121 ft
4 main spans
Daily traffic
92
2022 count
Owner
State
State Highway Agency

About this bridge

FM 984 over Onion Creek is a concrete stringer/multi-beam or girder carrying FM 984 over Onion Creek in Ellis County, Texas. It was built in 1988, so it is 37 years old, younger than the Texas average of 44.4 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 92 vehicles a day, roughly 6% of them trucks, projected to reach 240 by 2033. The structure is 121 ft (36.9 m) long and 30 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesFM 984
CrossesOnion Creek
Location4.2 MI SW of SH 34
RouteState Highway 984
StateTexas
Coordinates32.2203, -96.69807
Functional classRural Minor 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 protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length121 ft (36.9 m)
Longest span30 ft (9.1 m)
Deck width30 ft (9.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic92 (2022)
Projected traffic240 by 2033
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 984 over Onion Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is FM 984 over Onion 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 November 2023.

How much traffic does FM 984 over Onion Creek carry?

About 92 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is FM 984 over Onion Creek?

The structure is 121 ft (36.9 m) long with a longest span of 30 ft (9.1 m) and a deck 30 ft wide.

Who owns FM 984 over Onion Creek?

It is owned by the State Highway Agency.