US Bridges

SH 121 over Midway Branch

Good

Denton County, Texas · 3.35 MI NE of IH 35E · Structure no. 180610354701010

Built
1998
27 years old
Condition
Good
inspected November 2023
Type
Culvert
Concrete
Length
52 ft
6 main spans
Daily traffic
15,000
2013 count
Owner
Toll Authority
Local Toll Authority

About this bridge

SH 121 over Midway Branch is a concrete culvert carrying SH 121 over Midway Branch in Denton County, Texas. It was built in 1998, so it is 27 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 15,000 vehicles a day, projected to reach 18,000 by 2033. The structure is 52 ft (15.9 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesSH 121
CrossesMidway Branch
Location3.35 MI NE of IH 35E
CountyDenton County
StateTexas
Coordinates33.04288, -96.92305
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans6
Design loadHS 20
Structure length52 ft (15.9 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,000 (2013)
Projected traffic18,000 by 2033
Trucks0%
Lanes on structure12
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a toll road
National Highway SystemYes

Ownership and planned work

OwnerLocal Toll Authority
Maintained byLocal Toll Authority
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 SH 121 over Midway Branch built?

It was built in 1998, making it 27 years old in 2025.

What condition is SH 121 over Midway Branch 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 SH 121 over Midway Branch carry?

About 15,000 vehicles per day (2013 count).

How long is SH 121 over Midway Branch?

The structure is 52 ft (15.9 m) long with a longest span of 8 ft (2.4 m).

Who owns SH 121 over Midway Branch?

It is owned by the Local Toll Authority.