US Bridges

SH 99 Ml over UPRR at CR 621

Good

Liberty County, Texas · .50 MI E of US 69 · Structure no. 201460351002311

Built
2019
6 years old
Condition
Good
inspected July 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
258 ft
2 main spans
Daily traffic
15,700
2019 count
Owner
State
State Highway Agency

About this bridge

SH 99 Ml over UPRR at CR 621 is a prestressed concrete stringer/multi-beam or girder carrying SH 99 Ml over UPRR at CR 621 in Liberty County, Texas. It was built in 2019, so it is 6 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 15,700 vehicles a day, roughly 10% of them trucks, projected to reach 26,300 by 2049. The structure is 258 ft (78.5 m) long and 40 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSH 99 Ml
CrossesUPRR at CR 621
Location.50 MI E of US 69
RouteState Highway 99
StateTexas
Coordinates30.06065, -94.98924
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionJuly 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length258 ft (78.5 m)
Longest span141 ft (43 m)
Deck width40 ft (12.3 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,700 (2019)
Projected traffic26,300 by 2049
Trucks10%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed1.9 mi (3 km)
TollOn a toll road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Toll Authority
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 SH 99 Ml over UPRR at CR 621 built?

It was built in 2019, making it 6 years old in 2025.

What condition is SH 99 Ml over UPRR at CR 621 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 July 2022.

How much traffic does SH 99 Ml over UPRR at CR 621 carry?

About 15,700 vehicles per day (2019 count), of which roughly 10% are trucks.

How long is SH 99 Ml over UPRR at CR 621?

The structure is 258 ft (78.5 m) long with a longest span of 141 ft (43 m) and a deck 40 ft wide.

Who owns SH 99 Ml over UPRR at CR 621?

It is owned by the State Highway Agency and maintained by the State Toll Authority.